the school houses roughly 500 pupils aged 13 to 18. every year in january and april, the school admits pupils aged 13 in grade 7 (known as d-form) and aged 14 in grade 8 (c-form) respectively. doon pupils take the indian certificate of secondary education in tenth grade and are thereafter offered two strands for the final two years: international baccalaureate (ib) or indian school certificate (isc). the school began offering the ib curriculum only in 2006, before which all pupils had to sit the isc examinations in twelfth grade.