The following subjects are normally available at IGCSE level at Brookhouse:
- Accounts
- Art & Design
- Biology
- Business Studies
- Chemistry
- Chinese
- Computer Studies
- Economics
- Drama
- English Language
- English Literature
- French
- German
- Geography
- History
- Kiswahili
- Mathematics
- Music
- Physical Education
- Physics
- Spanish
IGCSE is the British curriculum,which is different from the Kenyan curriculum,KCSE.The subjects taught under this system (IGCSE) are in line with most of the curricula in the world.