The Renzo Diaz Index

A reference library, not a blog — where the method behind the coaching gets written down: how IB and IGCSE actually work, how to read a predicted grade, how to tell a real result from a marketing claim.

Search for advice on the IB and IGCSE and you mostly find recycled definitions and directories padded for keywords. This is the opposite: specific, long-form answers to the exact questions families ask before they apply — written by someone who has spent a decade inside the syllabus, not by someone optimising for a phrase.

It grows slowly, on purpose. Every piece here holds itself to the same standard as the results page: verifiable, dated, specific — nothing written just to hit a word count.

For Parents

What to look for before you commit — how to read a school report or a predicted grade, and how to tell a tutor's real claim from a marketing one.

For Students

Study method and revision strategy, and the specific mechanics of IB and IGCSE assessment that no syllabus document explains.

Programs

IB, IGCSE, and the Italian system, organised by what a student is actually enrolled in — Mathematics AA and AI at SL and HL, Physics, IGCSE Core and Extended — with exam structure and marking folded into each program rather than a separate page that fits none of them well.

University

How IB and IGCSE subject choices carry through to university admissions — requirements, grade thresholds, and what actually matters where.