WJEC GCSE Computer Science grade boundaries 2026: A* to G out of 400
GCSE Computer Science
Start today's paperPaper resets in
WJEC GCSE Computer Science grade boundaries June 2026
These come from WJEC's GCSE Grade Points (Non Uniform Mark), June 2026. Computer Science is linear: candidates sit all the components in one series, WJEC adds the weighted marks into one total out of 400, and that total gives the grade. There is only one tier, so everyone can reach every grade from A* to G.
| Grade | June 2026 | June 2025 | Change | Share of 400, 2026 |
|---|---|---|---|---|
| A* | 293 | 300 | −7 | 7325% |
| A | 245 | 249 | −4 | 6125% |
| B | 197 | 200 | −3 | 4925% |
| C | 149 | 151 | −2 | 3725% |
| D | 121 | 123 | −2 | 3025% |
| E | 93 | 95 | −2 | 2325% |
| F | 66 | 68 | −2 | 1650% |
| G | 39 | 41 | −2 | 975% |
Unit boundaries, June 2026
WJEC lists a notional boundary for each unit. WJEC calls them a guide and not official grades. The weight is how many times each raw mark counts in the 400, so Unit 1 (100 marks) and Unit 2 (60 marks) are doubled and Unit 3 (80 marks) is not.
| Unit | Out of | Weight | A* | A | B | C |
|---|---|---|---|---|---|---|
| Unit 1: Understanding Computer Science | 100 | 2 | 70 | 59 | 48 | 37 |
| Unit 2: Computational Thinking and Programming | 60 | 2 | 46 | 37 | 28 | 20 |
| Unit 3: Software Development | 80 | 1 | 61 | 53 | 45 | 35 |
| Unit | D | E | F | G |
|---|---|---|---|---|
| Unit 1 | 31 | 24 | 17 | 10 |
| Unit 2 | 16 | 13 | 10 | 7 |
| Unit 3 | 27 | 19 | 12 | 5 |
A worked example
Take a candidate with 66 out of 100 in Unit 1, 39 out of 60 in Unit 2 and 58 out of 80 in Unit 3. Weighted, that is 132, 78 and 58, a total of 268 out of 400. It is above the A boundary of 245 and 25 marks short of the A* boundary of 293, so the grade is an A.
How 2026 compares with 2025
WJEC's 2025 sheet had an A* at 300, an A at 249 and a C at 151. All eight grades fell in 2026. The A* dropped by 7, the A by 4, the B by 3 and every grade from C to G by 2. The lower grades hardly moved, so the change is at the top.
A new course in the converter
Our WJEC GCSE Computer Science guide covers the newer Made-for-Wales course. Its specification says it is taught from 2025, and that Unit 1, a 1 hour 30 minute digital examination worth 80 marks and 50% of the qualification, is first awarded in 2026. WJEC's grade converter lists its June 2026 boundaries. The unit is out of 100 uniform marks and has no tiers.
| Grade | Raw mark, 2026 | Uniform marks (out of 100) |
|---|---|---|
| A* | 67 | 90 |
| A | 58 | 80 |
| B | 47 | 70 |
| C | 37 | 60 |
| D | 30 | 50 |
| E | 23 | 40 |
| F | 16 | 30 |
| G | 9 | 20 |
The qualification as a whole is awarded for the first time in 2027, when Unit 2, a 2 hour on-screen programming exam, has also run. Do not use the 3500 totals above for it.
What it means for you
- Unit 1 is the heaviest. It is 200 of the 400 weighted marks, so a weak Unit 1 shows in the total.
- Programming is not an extra. Units 2 and 3 together are 200 weighted marks, the other half.
- The A* sits at 73%. 293 out of 400 is 73%, while a C needs only 149, about 37%.
Use today's paper to practise
Try today's GCSE Computer Science paper. It has 8 questions and 25 to 35 marks, written by us and not by WJEC. Mark it and find your share of the total. If you score 21 out of 30, that is 70%, a little under the 73% that an A* needed in 2026. Because the real exam weights its units, one paper is only a rough guide.
Common questions
What are the WJEC GCSE Computer Science grade boundaries for 2026?
What mark do you need for a C in WJEC GCSE Computer Science in 2026?
Is WJEC GCSE Computer Science tiered?
Why are Unit 1 and Unit 2 doubled?
Did the boundaries go up or down from 2025?
What is the new Unit 1 in the converter?
Revision cards
Say it, then flip.
Where to go next
- Test it
GCSE Computer Science
A new exam-style paper every day, with instant marking and a mark scheme
Start today's paper
UK · GCSEWJEC GCSE Computer Science grade boundaries 2025WJEC's June 2025 GCSE Computer Science boundaries out of 400, with the unit weights and how the three units add up to each grade.