OCR A-level Computer Science grade boundaries 2025: A* to E

OCR A-level Computer Science grade boundaries 2025

The table is copied from OCR's June 2025 A Level boundaries document (version 1.0, 14 August 2025). Computer Science has one A-level code, H446, so there is one set of boundaries. The qualification is Computer systems (140 marks), Algorithms and programming (140 marks) and a 70 mark programming project, 350 in all.

Our OCR A-level Computer Science guide describes the components, and the board-wide boundaries for 2025 list the other OCR A-levels.

Component by component, 2025

The two written papers are close. Computer systems needed 112 out of 140 for a notional A* and Algorithms and programming needed 116. The programming project is marked by your teacher and moderated by OCR, and its A* was 63 out of 70, which is 90%. The upload and postal moderation routes have identical boundaries. OCR publishes component boundaries for information, because the grade comes from the total of the three.

The project boundary matters because the project is 20 per cent of the grade. A candidate who earns 63 of the 70 marks is at the A* level on that component before sitting either paper.

How 2025 compares with 2024

The A* slipped by 1 mark, to 291, and the A held at 256. The movement is at the other end. The B rose from 215 to 218, the C from 174 to 180, the D from 133 to 142 and the E from 93 to 105. That is a rise of 12 marks at the E line, so a candidate needed 30% of the marks to pass, against 27% in 2024. The 2024 figures are in OCR's document of 15 August 2024.

Ofqual says boundaries vary from year to year to reflect the difficulty of each paper. A rise of 12 at E and 6 at C, while A* is flat, says the lower grades were easier to reach on the 2025 papers.

The 2025 AS Computer Science boundaries

AS Computer Science (H046) is out of 140 and has no A*. The AS boundaries rose at every grade, with the A line going from 92 to 102 and the E line from 42 to 48.

Marks to grade: a Computer Science example

A candidate scores 80 on Computer systems, 85 on Algorithms and programming and 50 on the project, so 215 out of 350. The 2025 boundaries are 218 for a B and 180 for a C. 215 is above 180 and below 218, so the grade is a C, 3 marks short of a B. In 2024 the B line was 215, so the same total would have been a B, sitting exactly on the line. That is one example of how a rise at B changes a result for the same performance.

OCR's How do we calculate your A Level grade? states the rule: a mark equal to the boundary earns the grade, and one fewer drops you to the grade below.

Computer Science advice from the 2025 numbers

• Bank the project early. It is 70 of the 350 marks, and its A* line of 63 means you need to lose very few marks.
• Do not neglect either paper. Both are 140 marks, 2 hours 30 minutes, with no calculator.
• Aim above the line at the low end. The E boundary moved 12 marks in a year.
• Practise algorithms and programming in writing. Paper 2 is a written paper, and no calculator is allowed.

Practise with today's A-level Computer Science paper

Computer Science Advanced has a short timed paper of 8 questions each day. It is not an OCR paper, so use your percentage as a pointer. In 2025 the grade A line was 73% of the total and the grade B line 62%.

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UK · A-levelOCR A-level Computer Science grade boundaries 2026OCR A-level Computer Science (H446) June 2026 grade boundaries, component by component, plus AS, with three years side by side.