Grades 11 & 12 (Science) of National Education Board is a two-year course in which students study English, Mathematics, Physics, and Chemistry as compulsory subjects; and Biology or Computer Science in grade 11, and Nepali, English, Physics and Chemistry as compulsory subjects in grade 12. They can choose between Biology and Mathematics at this level. NEB administers the final examinations at the end of grade 12 and awards the Secondary Education Examination (SEE) to students who pass (score at least Grade C) five subjects.
Budhanilkantha School aims to provide all-round education to its students through a wide range of sporting and numerous co-curricular activities such as drama and debating, community services, scouting, sports, and so on. Students are actively involved in organizing and participating in various activities in and outside the school. Students also hold various leadership positions.