International A levelPearson EdexcelYCH11

Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries for 20 series, June 2019 to June 2026, for the qualification as a whole and for each paper. Each table shows the lowest mark that got each grade, copied from Pearson Edexcel's own document, which is linked underneath.

Pearson Edexcel International A level Chemistry past papers and mark schemes Specification All Edexcel grade boundaries Everything for Chemistry

June 2026 Pearson Edexcel International A level Chemistry grade boundaries

Newest

Pearson Edexcel International A level Chemistry grade boundaries, June 2026: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, June 2026
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1A: Structure, Bonding and Introducttion to Organic ChemistWCH11	80	not available	6075%	5265%	4455%	3746.3%	3037.5%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	6581.3%	5670%	4860%	4050%	3240%
Unit 2A: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	4961.3%	4252.5%	3645%	3037.5%	2430%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	4080%	3468%	2856%	2244%	1632%
Unit 3A: Practical Skills in Chemistry IWCH13	50	not available	3162%	2754%	2346%	1938%	1632%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7482.2%	6673.3%	5864.4%	5055.6%	4246.7%	3437.8%
Unit 4A: Rates, Equilibria and Further Organic ChemistryWCH14	90	6976.7%	6167.8%	5358.9%	4550%	3842.2%	3134.4%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	7785.6%	6875.6%	5965.6%	5156.7%	4347.8%	3538.9%
Unit 5A: Transition Metals and Organic Nitrogen ChemistryWCH15	90	8291.1%	7482.2%	6673.3%	5864.4%	5156.7%	4448.9%
Unit 6: Practical Skills in Chemistry IIWCH16	50	4182%	3774%	3366%	3060%	2754%	2448%
Unit 6A: Practical Skills in Chemistry IIWCH16	50	3672%	3264%	2856%	2550%	2244%	1938%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level June 2026 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

January 2026 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, January 2026: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, January 2026
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	6378.8%	5568.8%	4758.8%	3948.8%	3240%
Unit 1A: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	6378.8%	5568.8%	4758.8%	3948.8%	3240%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	6075%	5265%	4455%	3645%	2936.3%
Unit 2A: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	6075%	5265%	4455%	3645%	2936.3%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	3570%	3060%	2652%	2244%	1836%
Unit 3A: Practical Skills in Chemistry IWCH13	50	not available	3774%	3264%	2856%	2448%	2040%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	8190%	7280%	6370%	5460%	4651.1%	3842.2%
Unit 4A: Rates, Equilibria and Further Organic ChemistryWCH14	90	8190%	7381.1%	6471.1%	5561.1%	4752.2%	3943.3%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	7381.1%	6673.3%	5965.6%	5257.8%	4550%	3943.3%
Unit 5A: Transition Metals and Organic Nitrogen ChemistryWCH15	90	7381.1%	6673.3%	5965.6%	5257.8%	4550%	3943.3%
Unit 6: Practical Skills in Chemistry IIWCH16	50	4182%	3774%	3366%	2958%	2652%	2346%
Unit 6A: Practical Skills in Chemistry IIWCH16	50	4182%	3774%	3366%	2958%	2652%	2346%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level January 2026 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

October 2025 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, October 2025: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, October 2025
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	6480%	5670%	4860%	4050%	3341.3%
Unit 1A: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	6480%	5670%	4860%	4050%	3341.3%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	6075%	5265%	4455%	3645%	2936.3%
Unit 2A: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	6075%	5265%	4455%	3645%	2936.3%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	3468%	2958%	2550%	2142%	1734%
Unit 3A: Practical Skills in Chemistry IWCH13	50	not available	3468%	2958%	2550%	2142%	1734%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7077.8%	6167.8%	5257.8%	4347.8%	3538.9%	2730%
Unit 4A: Rates, Equilibria and Further Organic ChemistryWCH14	90	8190%	7381.1%	6471.1%	5561.1%	4752.2%	3943.3%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	6976.7%	6268.9%	5561.1%	4853.3%	4145.6%	3538.9%
Unit 5A: Transition Metals and Organic Nitrogen ChemistryWCH15	90	6976.7%	6268.9%	5561.1%	4853.3%	4145.6%	3538.9%
Unit 6: Practical Skills in Chemistry IIWCH16	50	4488%	4080%	3672%	3264%	2856%	2550%
Unit 6A: Practical Skills in Chemistry IIWCH16	50	4488%	4080%	3672%	3264%	2856%	2550%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level October 2025 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

June 2025 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, June 2025: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, June 2025
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	6480%	5670%	4860%	4050%	3341.3%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	6075%	5265%	4455%	3645%	2936.3%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	3672%	3162%	2754%	2346%	1938%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	8190%	7280%	6370%	5460%	4651.1%	3842.2%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	7381.1%	6673.3%	5965.6%	5257.8%	4550%	3943.3%
Unit 5A: Transition Metals and Organic Nitrogen ChemistryWCH15	90	7381.1%	6673.3%	5965.6%	5257.8%	4550%	3943.3%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3978%	3570%	3162%	2754%	2448%	2142%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level June 2025 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

June 2025 past papers and mark schemes

January 2025 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, January 2025: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, January 2025
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	5265%	4556.3%	3847.5%	3240%	2632.5%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	5366.3%	4556.3%	3746.3%	3037.5%	2328.8%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	3264%	2754%	2346%	1938%	1530%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7381.1%	6673.3%	5965.6%	5257.8%	4550%	3943.3%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	7178.9%	6572.2%	5965.6%	5358.9%	4752.2%	4246.7%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3570%	3060%	2550%	2040%	1632%	1224%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level January 2025 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

January 2025 past papers and mark schemes

October 2024 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, October 2024: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, October 2024
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	5568.8%	4860%	4151.3%	3442.5%	2835%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	5467.5%	4657.5%	3948.8%	3240%	2531.3%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	2958%	2448%	2040%	1632%	1224%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7077.8%	6268.9%	5460%	4651.1%	3943.3%	3235.6%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	6370%	5763.3%	5156.7%	4550%	3943.3%	3336.7%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3774%	3264%	2754%	2244%	1836%	1428%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level October 2024 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

October 2024 past papers and mark schemes

June 2024 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, June 2024: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, June 2024
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	5771.3%	5163.8%	4556.3%	3948.8%	3341.3%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	5366.3%	4657.5%	3948.8%	3341.3%	2733.8%
Unit 2R: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	6075%	5366.3%	4657.5%	4050%	3442.5%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	3060%	2652%	2244%	1836%	1428%
Unit 3R: Practical Skills in Chemistry IWCH13	50	not available	3570%	3060%	2550%	2040%	1632%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	6976.7%	6370%	5763.3%	5156.7%	4550%	3943.3%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	6572.2%	5965.6%	5358.9%	4752.2%	4246.7%	3741.1%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3978%	3672%	3366%	3060%	2754%	2448%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level June 2024 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

June 2024 past papers and mark schemes

January 2024 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, January 2024: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, January 2024
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	5973.8%	5265%	4556.3%	3847.5%	3240%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	5265%	4657.5%	4050%	3543.8%	3037.5%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	3366%	2856%	2346%	1938%	1530%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7482.2%	6774.4%	6066.7%	5358.9%	4752.2%	4145.6%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	6976.7%	6268.9%	5561.1%	4853.3%	4145.6%	3538.9%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3570%	3162%	2754%	2346%	1938%	1632%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level January 2024 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

January 2024 past papers and mark schemes

October 2023 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, October 2023: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, October 2023
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	5771.3%	5062.5%	4353.8%	3645%	2936.3%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	5163.8%	4556.3%	3948.8%	3442.5%	2936.3%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	3672%	3162%	2652%	2142%	1734%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7280%	6572.2%	5864.4%	5156.7%	4448.9%	3842.2%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	6976.7%	6268.9%	5561.1%	4853.3%	4145.6%	3538.9%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3672%	3264%	2856%	2448%	2040%	1734%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level October 2023 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

October 2023 past papers and mark schemes

June 2023 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, June 2023: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, June 2023
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	5872.5%	5163.8%	4455%	3746.3%	3037.5%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	5062.5%	4455%	3847.5%	3341.3%	2835%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	3672%	3162%	2652%	2142%	1734%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7381.1%	6673.3%	5965.6%	5257.8%	4550%	3943.3%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	6976.7%	6268.9%	5561.1%	4853.3%	4145.6%	3538.9%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3672%	3264%	2856%	2448%	2040%	1734%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level June 2023 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

June 2023 past papers and mark schemes

January 2023 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, January 2023: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, January 2023
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	4657.5%	4050%	3442.5%	2835%	2227.5%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	4556.3%	3847.5%	3138.8%	2430%	1721.3%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	2754%	2346%	1938%	1530%	1224%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7178.9%	5763.3%	4954.4%	4145.6%	3336.7%	2527.8%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	5965.6%	4550%	3842.2%	3134.4%	2527.8%	1921.1%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3774%	2856%	2448%	2040%	1632%	1326%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level January 2023 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

January 2023 past papers and mark schemes

October 2022 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, October 2022: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, October 2022
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	4657.5%	4050%	3442.5%	2835%	2227.5%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	4860%	4151.3%	3442.5%	2733.8%	2025%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	2754%	2346%	1938%	1530%	1224%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	6976.7%	5561.1%	4752.2%	3943.3%	3134.4%	2325.6%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	5763.3%	4347.8%	3640%	2932.2%	2325.6%	1718.9%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3468%	2550%	2142%	1734%	1326%	1020%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level October 2022 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

October 2022 past papers and mark schemes

June 2022 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, June 2022: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, June 2022
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Unit 1: Structure, Bonding and Introducttion to Organic ChemistryWCH11	80	not available	4657.5%	4050%	3442.5%	2835%	2227.5%
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholWCH12	80	not available	4860%	4050%	3341.3%	2632.5%	1923.8%
Unit 3: Practical Skills in Chemistry IWCH13	50	not available	2754%	2346%	1938%	1530%	1122%
Unit 4: Rates, Equilibria and Further Organic ChemistryWCH14	90	7381.1%	5965.6%	5055.6%	4145.6%	3336.7%	2527.8%
Unit 5: Transition Metals and Organic Nitrogen ChemistryWCH15	90	5864.4%	4448.9%	3741.1%	3033.3%	2325.6%	1718.9%
Unit 6: Practical Skills in Chemistry IIWCH16	50	3570%	2652%	2244%	1836%	1428%	1020%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level June 2022 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

June 2022 past papers and mark schemes

January 2022 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, January 2022: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, January 2022
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Structure, Bonding and Introduction to Organic ChemistryWCH11	80	not available	5265%	4455%	3746.3%	3037.5%	2328.8%
Energetics, Group Chemistry, Halogenoalkanes and AlcoholsWCH12	80	not available	4353.8%	3645%	3037.5%	2430%	1822.5%
Practical Skills in Chemistry IWCH13	50	not available	2652%	2142%	1734%	1326%	918%
Rates, Equilibria and Further Organic ChemistryWCH14	90	7178.9%	5965.6%	4954.4%	3943.3%	2932.2%	2022.2%
Transition Metals and Organic Nitrogen ChemistryWCH15	90	6471.1%	5257.8%	4347.8%	3538.9%	2730%	1921.1%
Practical Skills in Chemistry IIWCH16	50	4080%	3366%	2754%	2244%	1734%	1224%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level January 2022 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

January 2022 past papers and mark schemes

October 2021 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, October 2021: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, October 2021
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Structure, Bonding and Introduction to Organic ChemistryWCH11	80	not available	5163.8%	4353.8%	3645%	2936.3%	2227.5%
Energetics, Group Chemistry, Halogenoalkanes and AlcoholsWCH12	80	not available	4556.3%	3847.5%	3138.8%	2531.3%	1923.8%
Practical Skills in Chemistry IWCH13	50	not available	2754%	2346%	1938%	1530%	1224%
Rates, Equilibria and Further Organic ChemistryWCH14	90	7178.9%	5965.6%	4954.4%	3943.3%	2932.2%	1921.1%
Transition Metals and Organic Nitrogen ChemistryWCH15	90	6066.7%	4853.3%	4044.4%	3235.6%	2426.7%	1617.8%
Practical Skills in Chemistry IIWCH16	50	4182%	3468%	2856%	2244%	1734%	1224%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level October 2021 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

October 2021 past papers and mark schemes

January 2021 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, January 2021: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, January 2021
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Structure, Bonding and Introduction to Organic ChemistryWCH11	80	not available	5568.8%	4657.5%	3847.5%	3037.5%	2227.5%
Energetics, Group Chemistry, Halogenoalkanes and AlcoholsWCH12	80	not available	4556.3%	3847.5%	3138.8%	2430%	1721.3%
Practical Skills in Chemistry IWCH13	50	not available	3162%	2652%	2244%	1836%	1428%
Rates, Equilibria and Further Organic ChemistryWCH14	90	7684.4%	6370%	5257.8%	4145.6%	3033.3%	1921.1%
Transition Metals and Organic Nitrogen ChemistryWCH15	90	6471.1%	5257.8%	4347.8%	3538.9%	2730%	1921.1%
Practical Skills in Chemistry IIWCH16	50	4386%	3570%	3060%	2550%	2040%	1530%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level January 2021 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

January 2021 past papers and mark schemes

October 2020 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, October 2020: the qualification as a whole
Qualification or route	Max mark	Grade: lowest mark, and % of max mark
Qualification or route	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International A level	600	not available	48080%	42070%	36060%	30050%	24040%
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, October 2020
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Structure, Bonding and Introduction to Organic ChemistryWCH11	80	not available	5467.5%	4556.3%	3746.3%	2936.3%	2126.3%
Energetics, Group Chemistry, Halogenoalkanes and AlcoholsWCH12	80	not available	4455%	3746.3%	3037.5%	2328.8%	1721.3%
Practical Skills in Chemistry IWCH13	50	not available	3060%	2652%	2244%	1836%	1428%
Rates, Equilibria and Further Organic ChemistryWCH14	90	7381.1%	6167.8%	5055.6%	3943.3%	2932.2%	1921.1%
Transition Metals and Organic Nitrogen ChemistryWCH15	90	6370%	5358.9%	4448.9%	3538.9%	2730%	1921.1%
Practical Skills in Chemistry IIWCH16	50	4080%	3366%	2754%	2244%	1734%	1224%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level October 2020 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

Which boundaries

October 2020 past papers and mark schemes

January 2020 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, January 2020: the qualification as a whole
Qualification	Max mark	Grade: lowest mark, and % of max mark
Qualification	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, January 2020
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Structure, Bonding and Introduction to Organic ChemistryWCH11	80	not available	5973.8%	5366.3%	4758.8%	4252.5%	3746.3%
Energetics, Group Chemistry, Halogenoalkanes and AlcoholsWCH12	80	not available	5568.8%	4961.3%	4353.8%	3847.5%	3341.3%
Practical Skills in Chemistry IWCH13	50	not available	3672%	3264%	2856%	2550%	2244%
Rates, Equilibria and Further Organic ChemistryWCH14	90	7381.1%	6774.4%	6167.8%	5561.1%	5055.6%	4550%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.
A2 units are graded A to E: the A* figures for them are the theoretical boundaries Pearson publishes. Pearson publishes no A* boundary for the overall grade.

Source: Pearson Edexcel grade boundaries, International A level January 2020 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

January 2020 past papers and mark schemes

October 2019 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, October 2019: the qualification as a whole
Qualification	Max mark	Grade: lowest mark, and % of max mark
Qualification	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, October 2019
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Structure, Bonding and Introduction to Organic ChemistryWCH11	80	not available	6480%	5872.5%	5265%	4657.5%	4050%
Energetics, Group Chemistry, Halogenoalkanes an AlcoholWCH12	80	not available	6075%	5467.5%	4961.3%	4455%	3948.8%
Practical Skills in ChemistryWCH13	50	not available	3774%	3366%	2958%	2550%	2244%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.

Source: Pearson Edexcel grade boundaries, International A level October 2019 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

October 2019 past papers and mark schemes

June 2019 Pearson Edexcel International A level Chemistry grade boundaries

Pearson Edexcel International A level Chemistry grade boundaries, June 2019: the qualification as a whole
Qualification	Max mark	Grade: lowest mark, and % of max mark
Qualification	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
International AS level	300	not available	24080%	21070%	18060%	15050%	12040%

Pearson Edexcel International A level Chemistry unit boundaries, June 2019
Unit	Max mark	Grade: lowest mark, and % of max mark
Unit	Max mark	Grade A*	Grade A	Grade B	Grade C	Grade D	Grade E
Structure, Bonding and Introduction to Organic ChemistryWCH11	80	not available	6277.5%	5670%	5062.5%	4455%	3948.8%
Energetics, Group Chemistry, Halogenoalkanes an AlcoholWCH12	80	not available	5771.3%	5062.5%	4455%	3847.5%	3240%
Practical Skills in ChemistryWCH13	50	not available	3468%	3060%	2652%	2244%	1836%

Unit boundaries are raw marks. Each unit mark is converted to the uniform mark scale (UMS), and the International AS and A level grades are decided by the UMS totals in the overall rows.

Source: Pearson Edexcel grade boundaries, International A level June 2019 (opens qualifications.pearson.com in a new tab)

Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.

June 2019 past papers and mark schemes

Common questions

What were the Chemistry grade boundaries in June 2026?

In June 2026, an A needed 480 out of 600 uniform marks and an E needed 240 on International A level. On International AS level, an A needed 240 out of 300 uniform marks and an E needed 120. The full table, with the boundaries for each paper, is at the top of this page.

Where do these Edexcel International A level Chemistry grade boundaries come from?

Every number is copied from Pearson Edexcel's own published grade boundary document for that series, which is linked under each table. We lay them out by course so you don't have to search a document covering every subject, and nothing is changed or estimated.

Why do grade boundaries change every year?

Boundaries are set after each exam has been marked, so that a grade means the same standard even when one year's paper is harder than another's. A harder paper usually has lower boundaries. That is why an old paper is best marked against its own year's boundaries, which is what the tables here are for.

When are new Chemistry grade boundaries published?

Edexcel publishes grade boundaries on results day: for summer exams that is mid August for A levels and a week later for GCSEs, and November and January series get theirs on their own results days. We add them here after that, usually well before the papers themselves are released.

More grade boundaries: every Edexcel course or every board.

cookie is independent and is not affiliated with or endorsed by any exam board. Every paper here is a link to the board's own copy on its own website, and the papers belong to the boards that set them. If a link has stopped working, the board's own past paper page is linked on each course. The grade boundaries are copied from the boards’ own published documents, each linked under its table.