Cambridge vs Edexcel: What Every New IGCSE Teacher Must Know

Two boards, one ecosystem

Cambridge Assessment International Education (CAIE) and Pearson Edexcel both award internationally recognised British-pathway qualifications. Schools choose a board per subject, and serious teachers in the region eventually meet both. The good news: the underlying subject content overlaps heavily. The differences that matter to you as a teacher are in structure, grading and question style.

The differences that change your teaching

Grading: Cambridge IGCSE historically grades A*–G (with a 9–1 option), while Edexcel International GCSE uses 9–1. Paper structure differs: the split between core/extended tiers, coursework options and practical assessment varies by board and syllabus. Question style differs too — teachers often describe Edexcel papers as more structured and predictable, Cambridge as more varied in application questions. Command words are defined per board, and mark schemes reward different phrasings.

Practically: never teach 'IGCSE Chemistry' in the abstract. Teach Cambridge 0620 or the Edexcel equivalent — download that board's syllabus, its last five sessions of papers, and its mark schemes, and build your lessons around them.

Which board should a new teacher start with?

Start with the board your target students actually sit. In Egypt and much of the Gulf, Cambridge O Level has a very large footprint, which is why IG Career currently focuses its certification on Cambridge O Level and teaches the Cambridge-vs-Edexcel comparison inside the IGCSE Intro module. Master one board deeply first; adding the second later is far easier than starting shallow on both.