Editorial standards

Source authority

Every course is led by an instructor with either (a) direct examining experience for the relevant board, or (b) a documented track record of placing students in top-percentile outcomes. We don't license generic content from third-party mills.

Three-stage review

1. Subject review — a second examiner verifies every question, worked solution, and mark scheme against the latest official syllabus.
2. Pedagogy review — a learning-science specialist checks the sequencing, difficulty curve, and worked-example design.
3. Learner review — current students from the target programme test-drive each unit and rate clarity before publication.

Citations and worked solutions

Past-paper questions are cited with year, board, paper, and question number. Mark schemes follow the official rubric exactly — when we adapt a question for teaching, we label it as such so students never confuse our material for an official paper.

Update cycle

We re-audit every course at the start of each exam cycle. When boards change the syllabus mid-cycle, affected lessons are re-shot or rewritten within 14 days and tagged with the change log.

Corrections

Found an error? Email it via the contact page and we'll credit you publicly in the course changelog if you'd like. Verified corrections ship within 48 hours.

Conflict of interest

We don't take sponsorship from exam boards or testing services, and our instructors don't take referral fees from universities or tutoring agencies. Our only revenue source is course sales — that keeps our recommendations honest.