WJEC A-level Biology grade boundaries 2026: raw marks for every unit
A-level Biology: Year 1
Start today's paperA-level Biology: Year 2
Start today's paperPapers reset in
WJEC A-level Biology grade boundaries June 2026
Biology (1400) has five units, according to the specification: Basic Biochemistry and Cell Organisation, Biodiversity and Physiology of Body Systems, Energy, Homeostasis and the Environment, Variation, Inheritance and Options, and a practical examination. They are worth 100, 100, 125, 125 and 50 uniform marks. The first table shows the uniform marks for each unit grade, which WJEC holds fixed.
| Unit | A | B | C | D | E |
|---|---|---|---|---|---|
| Biology AS Unit 1 | 80 | 70 | 60 | 50 | 40 |
| Biology AS Unit 2 | 80 | 70 | 60 | 50 | 40 |
| Biology A2 Unit 3 | 100 | 88 | 75 | 63 | 50 |
| Biology A2 Unit 4 | 100 | 88 | 75 | 63 | 50 |
| Biology A2 Unit 5 | 40 | 35 | 30 | 25 | 20 |
Raw marks per unit, 2026
These are the 2026 raw marks, taken from the board's grade converter.
| Unit | A, 2026 | B | C | D | E | A, change on 2025 |
|---|---|---|---|---|---|---|
| AS Unit 1 | 44 | 37 | 30 | 23 | 17 | −3 |
| AS Unit 2 | 42 | 35 | 29 | 23 | 17 | +1 |
| A2 Unit 3 | 50 | 43 | 36 | 29 | 22 | −3 |
| A2 Unit 4 | 49 | 42 | 35 | 28 | 22 | +1 |
| A2 Unit 5 | 35 | 31 | 28 | 25 | 22 | 0 |
A worked total
Consider raw marks of 37, 35, 43, 42 and 31 across the five units. The 2026 converter gives 70, 70, 88, 88, 35, which is 351 uniform marks. That sits above the B boundary of 350 and 49 below A at 400. The A2 units provide 211. An A* needs an overall A and 270 on those.
The practical stood still
Unit 5 is the one unit whose boundaries did not move in 2026. An A needed 35 raw marks in both 2025 and 2026, a B 31, a C 28, a D 25 and an E 22. Because the unit is worth only 50 uniform marks, that stability makes it a dependable place to bank marks.
Senedd Research reports that 29.6% of A level grades in Wales were A* or A in 2026, and 97.7% were A* to E.
A short check on spread helps with planning. In 2026 the gap from E to A was 27 raw marks in Unit 1, 25 in Unit 2, 28 in Unit 3 and 27 in Unit 4. If you are consistently 5 marks under an A in each, you lose about 25 uniform marks over those units, which is the difference between a B and an A on the overall scale.
Using the 2026 table
- Unit 1 needed 3 fewer raw marks for every grade except E. An A fell from 47 to 44.
- Unit 2 was close to 2025. An A rose by 1, to 42.
- Unit 4 asked for one more mark. An A went from 48 to 49.
- An A overall is 80% of the uniform marks. Aim there across all five.
Use today's paper to test yourself
Try A-level Biology: Year 1 or Year 2. They have 8 questions and 25 to 35 marks, written by us and not WJEC. Biology papers reward precise wording, so reread your answers against the mark scheme for key terms.
Common questions
What raw mark was an A in WJEC A-level Biology Unit 1 in 2026?
What are the WJEC A-level Biology boundaries for 2026?
Which Biology unit did not change in 2026?
What does an A* need?
Revision cards
Say it, then flip.
Where to go next
- Test it
A-level Biology: Year 1
A new exam-style paper every day, with instant marking and a mark scheme
Start today's paper - Test it
A-level Biology: Year 2
A new exam-style paper every day, with instant marking and a mark scheme
Start today's paper
UK · A-levelWJEC A-level Biology grade boundaries 2025WJEC A-level Biology 2025 boundaries: raw marks for every unit, the fixed UMS scale, a worked total and how 2025 compares with 2026.