Overview
Official 5090 Biology grade boundaries for June 2026 publish in August — O-Level grades 18 August 2026, component threshold tables around 13 August. Estimate with marked past papers via the [5090 calculator](/tools/grade-boundary-calculator/5090).
Quick answer
For Cambridge syllabus 5090, [Post-exam prep](/blog/cambridge-post-exam-results-prep-2026) · [Results day guide](/blog/cambridge-results-day-august-2026-guide)
| Question | Answer |
|---|---|
| When are June 2026 O-Level grades released? | 18 August 2026 (06:00 GMT) |
| When are threshold tables published? | ~13 August 2026 |
| Papers? | MCQ + theory (check your entry) |
| Marking style? | Precise terminology on structured Qs |
| Estimate tool | 5090 grade calculator |
What are grade boundaries?
Grade boundaries are the minimum raw marks Cambridge requires for each letter grade on each component of 5090 Biology. They are not fixed percentages — your overall O-Level grade uses a weighted aggregate across the papers you entered, and each paper variant has its own row in the official PDF. Match your exact component codes from the statement of entry before comparing marks to any past session.
How Cambridge sets 5090 boundaries
For Cambridge syllabus 5090, cambridge sets 5090 thresholds after all scripts are marked so each grade means the same standard every year. Use exact mark-scheme vocabulary on structured answers — paraphrased definitions often score zero. When a paper is harder than the previous June series, raw cut-offs usually fall — comparable outcomes, not fixed quotas. Compare only to verified 5090 sessions ([wrong-session estimates](/insights)).
How to estimate your grade
This section covers How to estimate your grade — ranked by what Cambridge examiners return to most often in past papers.
- Complete a recent O-Level paper under timed conditions for your exact entry route.
- Mark strictly to the official scheme — log every lost mark before convincing yourself an answer "basically counts".
- Compare component raw marks to June 2024/2023 in the 5090 calculator until the verified June 2026 PDF loads.
Frequently asked questions
For Cambridge syllabus 5090, threshold PDFs ~13 August; grades 18 August.
When are official boundaries released?
Is 80% always an A*?
No — raw thresholds change every session.
O-Level vs IGCSE Biology?
Confirm your 5090 code on your statement of entry — papers differ from 0610.
Related subjects
O-Level and IGCSE grades release 18 August; component thresholds usually drop ~13 August. Never copy numbers between syllabus codes. See the [grade boundaries hub](/guides/grade-boundaries) for every syllabus calculator. Use each calculator only for its matching entry code on the statement of entry.