NIS accepts applications at all times of the year, and students can enroll at any time, depending on availability, through grade 11. Applications are not accepted for students intending to enroll in grade 12. To complete the IB Diploma Programme, high school students must enroll no later than the beginning of grade 11 and must complete their last two full years at NIS. For students entering the ELC preschool 3, applications are accepted as early as September 1 of the year prior to intended enrollment.