Disclaimer

Last updated 18 October 2026

Independence from the IB

Photon Resources is independent and is not affiliated with, endorsed by, or sponsored by the International Baccalaureate Organization. International Baccalaureate® and IB® are registered trademarks of the International Baccalaureate Organization. We use "IB" only to describe the courses our books are written for.

Original content

All questions, worked solutions, explanations and practice papers on this site and in the Photon Guidebooks are written by Photon Academy. They are in the style of the exam, but they are not IB questions and the solutions are not IB markschemes. We do not reproduce or host IB exam papers, markschemes, subject guides, formula booklets or data booklets. Students should get official materials from their school or the IB.

Exam information

Where we describe exam formats, papers or timings, we do so in our own words from published information, and we date what we checked. Formats can change. Your school and the IB's own publications are the final word.

Calculators

TI-Nspire is a trademark of Texas Instruments. Casio and fx-CG50 are trademarks of Casio Computer Co., Ltd. Calculator steps in our books are our own, and we are not connected with either company.

No guarantee of results

The guidebooks are study aids. Results depend on many things, and we cannot promise any particular grade.