WJEC GCSE Physics grade boundaries 2025: what each grade needed

WJEC GCSE Physics grade boundaries June 2025

Physics (3420) is unitised, so its boundaries come as fixed totals plus raw marks per unit. The totals are in WJEC's overall UMS document, and the raw marks for June 2025 are in the grade converter.

Foundation raw marks, June 2025

Higher raw marks, June 2025

Practical (Unit 3) raw marks, June 2025

Reading the Physics units

The specification sets Unit 1, Electricity, Energy and Waves, and Unit 2, Forces, Space and Radioactivity, as 80-mark written papers of 1 hour 45 minutes, each worth 45%. That makes the raw marks easy to read as shares:

• Foundation Unit 1: a C at 28 is 35% of the paper, and a G at 10 is 13%.
• Foundation Unit 2: a C at 42 is 53%, and a G at 21 is 26%.
• Higher Unit 1: an A* at 48 is 60%, an A at 37 is 46%, and a C at 16 is 20%.
• Higher Unit 2: an A* at 54 is 68%, an A at 43 is 54%, and a C at 24 is 30%.

So Unit 1 was the unit with a low Foundation C, 35% of the marks, while Unit 2 asked for 53%.

The Foundation cap

WJEC's UMS document sets the Foundation maximum one mark below the B boundary, which is 125 out of 180 on a written unit. In 2025 Foundation Unit 1 hit that cap at 33 raw marks and Unit 2 at 48. After 33 marks in Unit 1, every extra mark earned nothing more.

A Higher example

A Higher candidate scores 34 in Unit 1, 40 in Unit 2 and 17 in the practical. The converter gives 139, 139 and 28 uniform marks, a total of 306 out of 400. That is above the B boundary of 280 and 14 marks short of the A boundary of 320. The same Unit 1 raw mark of 34 gave 139 uniform marks in 2025 and 131 in 2026.

How Wales did in Physics in 2025

JCQ's Wales release for 21 August 2025 shows 44.4% of Physics results at A*/9 to A/7 and 90.0% at C/4 or above. Chemistry had 42.1% and 88.7%, and Biology 41.8% and 86.7%.

Next year

Foundation Unit 1 changed the most in 2026. Its C rose from 28 to 42 raw marks, and the 2026 Physics page has the whole table. The uniform totals did not move.

Use a daily paper alongside

The Physics Foundation and Physics Higher papers have 8 questions and 25 to 35 marks, and they are our own. Mark one and write down the equation you used for each lost mark. On the Foundation scale a share of about 35% to 53% was where a C sat in the 2025 written units, but a short paper cannot map to a real conversion.

Read next

UK · GCSEWJEC GCSE Physics grade boundaries 2026: marks per gradeWJEC's June 2026 GCSE Physics boundaries: fixed UMS totals, the raw marks for Units 1 to 3 on both tiers, and the big Foundation Unit 1 shift since 2025.