Courses taught at NSD lead to IGCSE, and IAL Examinations offered by Edexcel, London . Students will sit IGCSE in Class X and A Level in Class XII. Language, mathematics and science are considered to be the core subjects at NSD. IT is kept compulsory from Class I onwards so that children can cope and compete in this age of information. To ensure a sound knowledge of national culture and heritage, NSD teaches Bangla from Nursey and Bangladesh Studies from KG onwards as compulsory subjects.