Education & Reference
MarkScheme
Last updated 2026-07-09 · benchmark measured 2026-07-09 — deterministic & reproducible
AI marking tool for Cambridge and IB past papers, using official mark schemes.
Is MarkScheme production-ready?
Legit.Show ran its deterministic 7-Frame production-readiness benchmark on MarkScheme (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Standards; its weakest is Privacy. The per-frame breakdown is public on the Legit.Show listing; the single overall production-readiness score is reserved for the verified maker.
The 7 Frames
- Performance — 91/100
- Accessibility — 99/100
- Security — 80/100
- Privacy — 75/100
- Reliability — 80/100
- Standards — 100/100
- Discoverability — 100/100
What we measured
- Security headers present: HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 410 ms to first byte.
- Returns a proper 404 for unknown routes.
- 1 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
Cambridge A-Level students · O-Level students · IB Diploma students · Exam prep students · Self-study learners
Pricing
Free tier (5 questions/month); Pro $9.17/month ($110/year); Scholar $16.58/month ($199/year); Max $29.17/month ($350/year)