[citation needed] NISS is a member of the Council of International Schools (CIS), an approved Cambridge International Examinations (CIE) Centre, EduTrust certified, an Apple Distinguished School, fully accredited by the Western Association of Schools and Colleges (WASC), accredited member of FOBISIA and is also an authorised International Baccalaureate (IB) World School, authorised to offer the IB Primary Years Programme (PYP) and Diploma Programme (DP).

[citation needed] Its facilities include an Olympic-sized swimming pool, two gymnasiums, a two-tiered theatre, double-storey library, and a FIFA and World Rugby specified AstroTurf pitch.

Co-curricular activities such as swimming, hip hop dance, Taekwondo, inline skating, drama, and choir.

NISS also participates in sports competitions organised by the Athletic Conference of Singapore International Schools such as rugby, basketball, and football, and has been the official host for the FINA Swimming World Cup Swim Meets since 2017.

[2] The new campus features a 12-storey educational minded design and includes an Olympic-sized swimming pool, FIFA and World Rugby specified Astroturf field, a large auditorium, mega laboratory, two air indoor sports halls and a 2-storey library.