Most students lose marks not because they don't know the content — but because they don't write answers the way mark schemes want. This tool fixes that.
Decode
See exactly what each question type requires — mark points, level descriptors, key phrases.
Practice
Write your answer and submit — the tool auto-marks it against required keywords instantly.
Unlock
Sign up free to reveal the model answer after your attempt.
Biology
Cambridge IGCSE
Open decoder →Chemistry
Cambridge IGCSE
Open decoder →Physics
Cambridge IGCSE
Open decoder →Mathematics
Cambridge IGCSE
Open decoder →English Language
Cambridge IGCSE
Open decoder →A mark scheme decoder breaks down what examiners actually award marks for in each question type — showing you the exact mark points, phrases that earn marks, and common mistakes that lose them.
Real mark schemes are compressed and written for examiners. This tool translates them into plain language with examples, a practice mode, and auto-marked feedback so students can actively apply the principles.
Currently Cambridge IGCSE: Biology (0610), Chemistry (0620), Physics (0625), Mathematics (0580) and English Language (0500). More subjects and boards are being added regularly.
Select a question type, read the mark scheme guidance, then click Practice. Write your answer and hit Submit — the tool auto-marks it against required keywords and tells you exactly which mark points you hit or missed.
Yes — completely free. Model answers unlock after a free sign-up.
Our specialist tutors can work through mark scheme technique with your child in a live one-to-one session.
Pair this formula sheet with past papers, revision checklists, and planners — all free on our study tools hub.