Grade boundaries
Cambridge Cambridge O Level Biology 5090 grade boundaries
The newest summer series is shown first. Type a mark to see its grade, or choose another tier, series or paper.
Level
Board
Course
Cambridge O Level Biology 5090
Boundaries
Whole subject or paper
Type a mark to see its grade.
The boundaries
June 2026 · whole subject
| Grade | Needs |
|---|---|
| A* | 87% |
| A | 77% |
| B | 67% |
| C | 57% |
| D | 47% |
| E | 37% |
Every course·Mock grade calculator
Marks for each grade in June 2026
In total (11, 21, 31)
- 168 out of 200 on Cambridge 5090 (11, 21, 31) in total was a grade A* in June 2026.
- 141 out of 200 on Cambridge 5090 (11, 21, 31) in total was a grade A in June 2026.
- 114 out of 200 on Cambridge 5090 (11, 21, 31) in total was a grade B in June 2026.
- 88 out of 200 on Cambridge 5090 (11, 21, 31) in total was a grade C in June 2026.
- 75 out of 200 on Cambridge 5090 (11, 21, 31) in total was a grade D in June 2026.
- 62 out of 200 on Cambridge 5090 (11, 21, 31) in total was a grade E in June 2026.
In total (11, 21, 41)
- 166 out of 200 on Cambridge 5090 (11, 21, 41) in total was a grade A* in June 2026.
- 140 out of 200 on Cambridge 5090 (11, 21, 41) in total was a grade A in June 2026.
- 114 out of 200 on Cambridge 5090 (11, 21, 41) in total was a grade B in June 2026.
- 88 out of 200 on Cambridge 5090 (11, 21, 41) in total was a grade C in June 2026.
- 75 out of 200 on Cambridge 5090 (11, 21, 41) in total was a grade D in June 2026.
- 62 out of 200 on Cambridge 5090 (11, 21, 41) in total was a grade E in June 2026.
In total (12, 22, 32)
- 164 out of 200 on Cambridge 5090 (12, 22, 32) in total was a grade A* in June 2026.
- 137 out of 200 on Cambridge 5090 (12, 22, 32) in total was a grade A in June 2026.
- 110 out of 200 on Cambridge 5090 (12, 22, 32) in total was a grade B in June 2026.
- 84 out of 200 on Cambridge 5090 (12, 22, 32) in total was a grade C in June 2026.
- 72 out of 200 on Cambridge 5090 (12, 22, 32) in total was a grade D in June 2026.
- 61 out of 200 on Cambridge 5090 (12, 22, 32) in total was a grade E in June 2026.
In total (12, 22, 42)
- 162 out of 200 on Cambridge 5090 (12, 22, 42) in total was a grade A* in June 2026.
- 135 out of 200 on Cambridge 5090 (12, 22, 42) in total was a grade A in June 2026.
- 108 out of 200 on Cambridge 5090 (12, 22, 42) in total was a grade B in June 2026.
- 82 out of 200 on Cambridge 5090 (12, 22, 42) in total was a grade C in June 2026.
- 70 out of 200 on Cambridge 5090 (12, 22, 42) in total was a grade D in June 2026.
- 58 out of 200 on Cambridge 5090 (12, 22, 42) in total was a grade E in June 2026.
In total (50)
- 78 out of 90 on Cambridge 5090 (50) in total was a grade A* in June 2026.
- 69 out of 90 on Cambridge 5090 (50) in total was a grade A in June 2026.
- 60 out of 90 on Cambridge 5090 (50) in total was a grade B in June 2026.
- 51 out of 90 on Cambridge 5090 (50) in total was a grade C in June 2026.
- 42 out of 90 on Cambridge 5090 (50) in total was a grade D in June 2026.
- 33 out of 90 on Cambridge 5090 (50) in total was a grade E in June 2026.
Every series
9 series, newest first. Each mark is the least that reaches the grade, out of the total under the column’s name.
June 2026
From Cambridge’s grade boundaries for June 2026: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 200 | Whole subject (11, 21, 41)out of 200 | Whole subject (12, 22, 32)out of 200 | Whole subject (12, 22, 42)out of 200 | Whole subject (50)out of 90 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/41out of 40 | 5090/42out of 40 | 5090/50out of 90 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 168 | 166 | 164 | 162 | 78 | – | – | – | – | – | – | – | – | – |
| A | 141 | 140 | 137 | 135 | 69 | 32 | 32 | 50 | 47 | 30 | 30 | 29 | 28 | 69 |
| B | 114 | 114 | 110 | 108 | 60 | 26 | 26 | 39 | 36 | 26 | 26 | 26 | 24 | 60 |
| C | 88 | 88 | 84 | 82 | 51 | 20 | 20 | 28 | 25 | 23 | 23 | 23 | 21 | 51 |
| D | 75 | 75 | 72 | 70 | 42 | 17 | 17 | 24 | 21 | 20 | 20 | 20 | 18 | 42 |
| E | 62 | 62 | 61 | 58 | 33 | 15 | 15 | 18 | 17 | 17 | 17 | 17 | 14 | 33 |
November 2025
From Cambridge’s grade boundaries for November 2025: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 200 | Whole subject (11, 21, 41)out of 200 | Whole subject (12, 22, 32)out of 200 | Whole subject (12, 22, 42)out of 200 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/41out of 40 | 5090/42out of 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 157 | 157 | 153 | 153 | – | – | – | – | – | – | – | – |
| A | 131 | 131 | 127 | 127 | 30 | 30 | 49 | 43 | 25 | 28 | 25 | 28 |
| B | 105 | 105 | 101 | 101 | 24 | 24 | 38 | 34 | 21 | 23 | 21 | 23 |
| C | 79 | 79 | 75 | 75 | 19 | 19 | 26 | 23 | 18 | 18 | 18 | 18 |
| D | 67 | 67 | 63 | 63 | 17 | 17 | 21 | 19 | 15 | 14 | 15 | 14 |
| E | 56 | 56 | 52 | 52 | 15 | 15 | 17 | 15 | 12 | 11 | 12 | 11 |
June 2025
From Cambridge’s grade boundaries for June 2025: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 200 | Whole subject (11, 21, 41)out of 200 | Whole subject (12, 22, 32)out of 200 | Whole subject (12, 22, 42)out of 200 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/41out of 40 | 5090/42out of 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 165 | 163 | 153 | 153 | – | – | – | – | – | – | – | – |
| A | 139 | 137 | 127 | 127 | 32 | 32 | 49 | 39 | 30 | 30 | 28 | 30 |
| B | 113 | 111 | 101 | 101 | 26 | 26 | 38 | 28 | 27 | 27 | 25 | 27 |
| C | 88 | 86 | 75 | 75 | 20 | 20 | 27 | 17 | 24 | 24 | 22 | 24 |
| D | 74 | 73 | 63 | 64 | 17 | 17 | 23 | 14 | 20 | 20 | 19 | 21 |
| E | 61 | 60 | 52 | 53 | 15 | 15 | 17 | 10 | 17 | 17 | 16 | 18 |
November 2024
From Cambridge’s grade boundaries for November 2024: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 200 | Whole subject (11, 21, 41)out of 200 | Whole subject (12, 22, 32)out of 200 | Whole subject (12, 22, 42)out of 200 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/41out of 40 | 5090/42out of 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 159 | 159 | 164 | 164 | – | – | – | – | – | – | – | – |
| A | 133 | 133 | 138 | 138 | 30 | 30 | 49 | 51 | 27 | 29 | 27 | 29 |
| B | 107 | 107 | 112 | 112 | 25 | 25 | 37 | 41 | 23 | 23 | 23 | 23 |
| C | 82 | 82 | 86 | 86 | 20 | 20 | 26 | 30 | 19 | 18 | 19 | 18 |
| D | 70 | 70 | 74 | 73 | 18 | 18 | 22 | 26 | 15 | 15 | 15 | 14 |
| E | 59 | 59 | 62 | 60 | 16 | 16 | 18 | 20 | 12 | 13 | 12 | 11 |
June 2024
From Cambridge’s grade boundaries for June 2024: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 200 | Whole subject (11, 21, 41)out of 200 | Whole subject (12, 22, 32)out of 200 | Whole subject (12, 22, 42)out of 200 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/41out of 40 | 5090/42out of 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 165 | 164 | 165 | 164 | – | – | – | – | – | – | – | – |
| A | 139 | 138 | 139 | 138 | 32 | 32 | 49 | 49 | 30 | 30 | 29 | 29 |
| B | 113 | 112 | 113 | 112 | 26 | 26 | 38 | 38 | 27 | 27 | 26 | 26 |
| C | 88 | 87 | 87 | 86 | 20 | 20 | 27 | 26 | 24 | 24 | 23 | 23 |
| D | 74 | 73 | 74 | 73 | 17 | 18 | 23 | 22 | 20 | 20 | 19 | 19 |
| E | 61 | 60 | 61 | 60 | 15 | 15 | 17 | 17 | 17 | 17 | 16 | 16 |
November 2023
From Cambridge’s grade boundaries for November 2023: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 200 | Whole subject (11, 21, 41)out of 200 | Whole subject (12, 21, 32)out of 200 | Whole subject (12, 21, 42)out of 200 | Whole subject (12, 22, 32)out of 200 | Whole subject (12, 22, 42)out of 200 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/41out of 40 | 5090/42out of 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 155 | 155 | 157 | 158 | 160 | 161 | – | – | – | – | – | – | – | – |
| A | 128 | 128 | 130 | 130 | 134 | 134 | 29 | 31 | 46 | 49 | 27 | 26 | 27 | 26 |
| B | 101 | 101 | 103 | 102 | 108 | 107 | 24 | 26 | 34 | 38 | 23 | 22 | 23 | 21 |
| C | 75 | 75 | 76 | 75 | 82 | 81 | 19 | 20 | 22 | 27 | 19 | 18 | 19 | 17 |
| D | 62 | 62 | 64 | 63 | 68 | 67 | 16 | 18 | 18 | 21 | 16 | 15 | 16 | 14 |
| E | 50 | 50 | 52 | 51 | 54 | 53 | 14 | 15 | 13 | 15 | 13 | 13 | 13 | 12 |
June 2023
From Cambridge’s grade boundaries for June 2023: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 200 | Whole subject (11, 21, 41)out of 200 | Whole subject (12, 22, 32)out of 200 | Whole subject (12, 22, 42)out of 200 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/41out of 40 | 5090/42out of 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 159 | 149 | 166 | 165 | – | – | – | – | – | – | – | – |
| A | 132 | 123 | 138 | 136 | 30 | 32 | 45 | 47 | 31 | 31 | 22 | 29 |
| B | 105 | 97 | 110 | 107 | 24 | 26 | 34 | 36 | 26 | 26 | 18 | 24 |
| C | 78 | 71 | 82 | 79 | 18 | 20 | 23 | 24 | 22 | 22 | 15 | 19 |
| D | 65 | 59 | 68 | 65 | 16 | 17 | 18 | 18 | 20 | 20 | 12 | 17 |
| E | 53 | 47 | 55 | 52 | 14 | 15 | 13 | 13 | 16 | 16 | 10 | 13 |
November 2022
From Cambridge’s grade boundaries for November 2022: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 160 | Whole subject (11, 21, 61)out of 160 | Whole subject (12, 22, 32)out of 160 | Whole subject (12, 22, 62)out of 160 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/61out of 40 | 5090/62out of 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 123 | 123 | 120 | 121 | – | – | – | – | – | – | – | – |
| A | 102 | 103 | 101 | 101 | 28 | 30 | 47 | 47 | 27 | 24 | 28 | 24 |
| B | 81 | 83 | 82 | 81 | 24 | 25 | 36 | 37 | 21 | 20 | 23 | 19 |
| C | 61 | 63 | 63 | 61 | 20 | 21 | 25 | 25 | 16 | 17 | 18 | 15 |
| D | 48 | 49 | 50 | 48 | 16 | 17 | 19 | 18 | 13 | 15 | 14 | 13 |
| E | 36 | 36 | 38 | 35 | 13 | 13 | 12 | 12 | 11 | 13 | 11 | 10 |
June 2022
From Cambridge’s grade boundaries for June 2022: the board’s document.
| Grade | Whole subject (11, 21, 31)out of 160 | Whole subject (11, 21, 61)out of 160 | Whole subject (11, 22, 62)out of 160 | Whole subject (12, 22, 32)out of 160 | Whole subject (12, 22, 62)out of 160 | 5090/11out of 40 | 5090/12out of 40 | 5090/21out of 80 | 5090/22out of 80 | 5090/31out of 40 | 5090/32out of 40 | 5090/61out of 40 | 5090/62out of 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | 120 | 121 | 117 | 119 | 119 | – | – | – | – | – | – | – | – |
| A | 100 | 101 | 97 | 98 | 98 | 27 | 28 | 46 | 43 | 27 | 27 | 28 | 27 |
| B | 80 | 81 | 77 | 77 | 77 | 22 | 22 | 35 | 32 | 23 | 23 | 25 | 23 |
| C | 60 | 62 | 57 | 57 | 57 | 16 | 16 | 24 | 21 | 20 | 20 | 22 | 20 |
| D | 50 | 53 | 47 | 47 | 47 | 14 | 14 | 20 | 16 | 17 | 17 | 19 | 17 |
| E | 41 | 44 | 37 | 37 | 37 | 11 | 11 | 16 | 12 | 14 | 14 | 17 | 14 |
Questions
Which series of Cambridge Cambridge O Level Biology 5090 grade boundaries are there?
9 series, from June 2022 to June 2026: June 2026, November 2025, June 2025, November 2024, June 2024, November 2023, June 2023, November 2022 and June 2022.
Other courses
Biology at other boards
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A series, or the safe rule
A paper is graded against the boundaries of the series it was sat in. Choose that series and the grade is the one the board’s boundaries gave that sitting. Where a series published more than one set of boundaries for the whole subject, one for each combination of papers, each grade takes the highest of them, and the line under the grade says so.
The safe rule is for a mark with no series of its own, such as a mock. For each grade it takes the highest boundary in the board’s most recent summer series, up to three of them and leaving out 2020 to 2022, or the course’s main series where it has no summer one. A grade it gives would have been enough in each of them. The line under the grade names the series it counted.
In the app you log a paper in one line, or question by question where asterisk has its questions, and each grade comes from these same boundaries. Open the app.
Not here
CCEA, AS level, IB and AP: the app holds no grade boundaries for them, so they are not offered.
Where these numbers come from
Boards publish their grade boundaries after each series, and that is all this page holds: each grade’s boundary mark and what the subject or paper is out of, as the board printed them. The papers stay on the boards’ own sites; nothing here reproduces a question or a mark scheme.