A-Level Biology grade boundaries — June 2025
Cambridge International AS & A Level (9700). Minimum weighted marks for each grade in the June 2025 series, by paper combination. Find the row matching the papers you sat.
Compared with June 2024, the A* boundary for Papers 14, 24, 37, 44, 54 fell by 10 marks (201 → 191) and the E boundary fell by 10 marks (95 → 85).
A Level options — June 2025
| Papers | Max | A* | A | B | C | D | E |
|---|---|---|---|---|---|---|---|
| Papers 14, 24, 37, 44, 54 | 260 | 19174% | 16765% | 14356% | 12348% | 10440% | 8533% |
| Papers 11, 21, 31, 41, 51 | 260 | 20077% | 17568% | 15058% | 13050% | 11043% | 9035% |
| Papers 12, 22, 33, 42, 52 | 260 | 18873% | 16363% | 13854% | 11645% | 9537% | 7429% |
| Papers 13, 23, 35, 43, 53 | 260 | 20178% | 17568% | 14958% | 12950% | 10942% | 9035% |
| Papers 44, 54, 85 | 260 | 18572% | 16162% | 13753% | 11846% | 9939% | 8031% |
| Papers 44, 54, 88 | 260 | 18973% | 16564% | 14155% | 12147% | 10240% | 8332% |
| Papers 41, 51, 84 | 260 | 20479% | 18170% | 15861% | 13753% | 11645% | 9637% |
| Papers 41, 51, 87 | 260 | 20579% | 18270% | 15962% | 13854% | 11745% | 9637% |
| Papers 42, 52, 85 | 260 | 18772% | 16162% | 13552% | 11444% | 9336% | 7228% |
| Papers 42, 52, 88 | 260 | 19174% | 16564% | 13954% | 11745% | 9637% | 7529% |
| Papers 43, 53, 86 | 260 | 19977% | 17568% | 15159% | 13050% | 10942% | 8935% |
| Papers 44, 54, 96 | 260 | 18873% | 16564% | 14255% | 12147% | 10039% | 8031% |
| Papers 44, 54, 99 | 260 | 19074% | 16865% | 14657% | 12549% | 10440% | 8332% |
| Papers 43, 53, 94 | 260 | 19977% | 17267% | 14556% | 12448% | 10440% | 8433% |
| Papers 41, 51, 95 | 260 | 20379% | 17769% | 15159% | 13050% | 11043% | 9035% |
| Papers 41, 51, 98 | 260 | 20379% | 17769% | 15159% | 13151% | 11143% | 9135% |
| Papers 42, 52, 96 | 260 | 19074% | 16564% | 14054% | 11745% | 9437% | 7228% |
| Papers 42, 52, 99 | 260 | 19274% | 16865% | 14456% | 12147% | 9838% | 7529% |
| Papers 41, 51, 94 | 260 | 20278% | 17668% | 15058% | 13050% | 11043% | 9135% |
| Papers 42, 52, 95 | 260 | 19475% | 17066% | 14657% | 12448% | 10240% | 8031% |
| Papers 42, 52, 98 | 260 | 19475% | 17066% | 14657% | 12448% | 10240% | 8132% |
| Papers 43, 53, 96 | 260 | 19676% | 16865% | 14054% | 11846% | 9637% | 7529% |
| Papers 43, 53, 99 | 260 | 19877% | 17166% | 14456% | 12247% | 10039% | 7830% |
| Papers 14, 24, 38, 44, 54 | 260 | 19174% | 16865% | 14556% | 12549% | 10641% | 8734% |
| Papers 11, 21, 32, 41, 51 | 260 | 19977% | 17568% | 15159% | 13151% | 11143% | 9135% |
| Papers 12, 22, 34, 42, 52 | 260 | 18873% | 16464% | 14054% | 11846% | 9738% | 7630% |
Marks are minimum weighted totals; percentages are rounded up. Anything below the E threshold is ungraded (U).
AS Level options — June 2025
| Papers | Max | A | B | C | D | E |
|---|---|---|---|---|---|---|
| Papers 50 | 75 | 5472% | 4560% | 3851% | 3142% | 2534% |
| Papers 11, 21, 31 | 130 | 9070% | 8062% | 6954% | 5946% | 4938% |
| Papers 11, 21, 32 | 130 | 9070% | 8163% | 7054% | 6047% | 5039% |
| Papers 12, 22, 33 | 130 | 8566% | 7357% | 6349% | 5341% | 4334% |
| Papers 12, 22, 34 | 130 | 8667% | 7558% | 6550% | 5543% | 4535% |
| Papers 13, 23, 35 | 130 | 9473% | 8465% | 7457% | 6550% | 5644% |
| Papers 14, 24, 37 | 130 | 8969% | 7659% | 6651% | 5644% | 4636% |
| Papers 14, 24, 38 | 130 | 9070% | 7860% | 6853% | 5845% | 4837% |
Marks are minimum weighted totals; percentages are rounded up. Anything below the E threshold is ungraded (U).
Paper (component) thresholds — June 2025
The minimum raw mark on each individual paper. Cambridge weights and adds these to set the syllabus boundaries above; there is no A* at paper level.
| Paper | Max | A | B | C | D | E |
|---|---|---|---|---|---|---|
| Paper 11 | 40 | 3280% | 2973% | 2665% | 2358% | 2050% |
| Paper 12 | 40 | 3280% | 2768% | 2460% | 2153% | 1845% |
| Paper 13 | 40 | 3280% | 2870% | 2563% | 2256% | 2050% |
| Paper 14 | 40 | 3383% | 2768% | 2460% | 2153% | 1845% |
| Paper 21 | 60 | 3559% | 3050% | 2440% | 1932% | 1322% |
| Paper 22 | 60 | 3254% | 2847% | 2339% | 1830% | 1220% |
| Paper 23 | 60 | 3762% | 3356% | 2847% | 2339% | 1830% |
| Paper 24 | 60 | 3559% | 3152% | 2644% | 2135% | 1525% |
| Paper 31 | 40 | 3075% | 2870% | 2563% | 2358% | 2153% |
| Paper 32 | 40 | 3178% | 2973% | 2665% | 2460% | 2256% |
| Paper 33 | 40 | 2870% | 2460% | 2153% | 1948% | 1743% |
| Paper 34 | 40 | 2973% | 2665% | 2460% | 2256% | 2050% |
| Paper 35 | 40 | 3383% | 3075% | 2870% | 2665% | 2460% |
| Paper 37 | 40 | 2870% | 2460% | 2153% | 1948% | 1743% |
| Paper 38 | 40 | 2973% | 2665% | 2460% | 2256% | 2050% |
| Paper 41 | 100 | 6666% | 5454% | 4747% | 3939% | 3131% |
| Paper 42 | 100 | 6262% | 5252% | 4343% | 3434% | 2424% |
| Paper 43 | 100 | 6060% | 4949% | 4242% | 3434% | 2525% |
| Paper 44 | 100 | 6262% | 5454% | 4747% | 3939% | 3131% |
| Paper 50 | 75 | 5472% | 4560% | 3851% | 3142% | 2534% |
| Paper 51 | 30 | 1964% | 1654% | 1447% | 1240% | 1034% |
| Paper 52 | 30 | 1654% | 1344% | 1137% | 930% | 724% |
| Paper 53 | 30 | 2170% | 1654% | 1344% | 1137% | 930% |
| Paper 54 | 30 | 1654% | 1344% | 1137% | 1034% | 827% |
June 2025 vs June 2024
Change in the minimum mark for matching paper routes (same series, one year earlier). Positive = harder to reach the grade.
| Papers | A* | A | B | C | D | E |
|---|---|---|---|---|---|---|
| Papers 14, 24, 37, 44, 54 | -10 201→191 | -13 180→167 | -16 159→143 | -14 137→123 | -12 116→104 | -10 95→85 |
| Papers 44, 54, 85 | -16 201→185 | -18 179→161 | -20 157→137 | -18 136→118 | -16 115→99 | -14 94→80 |
| Papers 44, 54, 96 | -2 190→188 | -1 166→165 | ±0 142→142 | ±0 121→121 | -1 101→100 | -1 81→80 |
| Papers 11, 21, 31 | -4 94→90 | -6 86→80 | -6 75→69 | -6 65→59 | -6 55→49 |
Biology grade boundaries June 2024 → · All sessions since March 2022 →
Frequently asked
- What was the A* boundary for Biology in June 2025?
- For Papers 14, 24, 37, 44, 54, an A* needed 191 out of 260 weighted marks (74%). Other paper combinations have their own thresholds — see the table above.
- What mark was a pass (grade E) in Biology June 2025?
- Grade E is the lowest pass. For Papers 14, 24, 37, 44, 54 it needed 85/260 (33%). Below that the result is U (ungraded).
- Why are the paper thresholds different from the overall boundaries?
- Cambridge sets a threshold for each paper (component) first, then weights and adds them to get the syllabus boundary for each combination of papers. Your grade comes from the weighted total, not from any single paper. Paper thresholds have no A* — the A* only exists at syllabus level.
- Did Biology grade boundaries go up or down in June 2025?
- Compared with June 2024, the A* boundary for Papers 14, 24, 37, 44, 54 fell by 10 marks (201 → 191) and the E boundary fell by 10 marks (95 → 85). Boundaries move to keep the standard constant when a paper turns out harder or easier than usual.
Calculate your Biology grade → Percentage needed for each grade
← March 2025 · November 2025 →
Figures sourced from the official Cambridge grade threshold tables. Always confirm with your exam board.