Our senior school has three levels: Key stage 3 which comprises of years 7, 8 & 9, Key stage 4 comprising of Years 10 & 11, and Key stage 5 comprising of years 12 & 13.

Years 7 to 9 are considered as Lower Secondary. They sit for iLower Secondary Exams which is externally assessed by Pearson Edexcel at the end of Year 9. Years 10 to 11 mark the beginning and end of O-Levels respectively. Students sit for IGCSE Exams at the end of year 11. Years 12 to 13 are the final key stages also referred to as A-Levels.

In Year 11, students take their International General Certificate of Secondary Education (IGCSE) exam, followed by International Advanced Subsidiary Levels (IAS) for year 12, and lastly the International Advanced level (A- levels) exams for Year 13.

Greenwood Groove International School is among the few IGCSE schools in Kenya under Pearson Edexcel.

Extra-Curricular