According to Thai Law, all international schools must be accredited by independent accreditation agencies. Ascot International School is currently accredited from Early Years to Year 13 by the Council of International Schools (CIS), the Western Association of Schools and Colleges (WASC). The school is also accredited by a Thai agency The Office for National Education Standards and Quality Assessment (ONESQA).
In March 2016 the school was awarded International World School status by the International Baccalaureate Organisation (IBO) and as such is accredited to deliver the International Baccalaureate Diploma Programme.
In addition, Ascot International School is a certified Cambridge International Examinations (CIE) centre and as such can administer IGCSE and A Levels
Timeline of accreditation
January 2010 – CIE certified examination centre.
May 2011 – Award of CIS & WASC Accreditation to Foundation to Year 10.
May 2014 – CIS/WASC/ONESQA . Successful 5 year visit and new programme accredited. Ascot International school is accredited from Early Years to Year 13.
March 2016 – Ascot International School was visited and received accreditation to offer the International Baccalaureate Diploma Programme.