What Is 'International Accreditation' in International Schools? How to Verify WASC, CIS, and IB Authorizations

International Accreditation Is Not One Thing: Distinguishing the Common Bodies

CIS (Council of International Schools) is an international education membership organization. Schools that pass its accreditation process are awarded 'CIS International Accreditation,' with review covering school governance, teaching quality, and student well-being. It has members in over 100 countries and over 800 schools. WASC (one of the American regional accrediting bodies, full name: Accrediting Commission for Schools, WASC) is a school accreditation system originating in the U.S. It reviews school quality and continuous improvement plans on a six-year cycle, and is widely recognized as a quality indicator for students applying to U.S. universities. The 'authorization' of IB (International Baccalaureate Organization) is granted per specific program (PYP/MYP/DP, etc.). Only after authorization can a school be called an 'IB World School' and offer that program; it is not the same system as the previous two. Cambridge International issues a 'Centre Number' to schools that offer IGCSE and A-Level programs, meaning the school is registered to administer official Cambridge exams. When you see the term 'international accreditation,' first check which organization granted it and what scope is covered, so you know what it actually means.

Official data source: Council of International Schools (CIS)

International Accreditation vs. Ministry of Education Registration: Each Verifies a Different Question

The registration review by the Ministry of Education (or the local education bureau) checks whether a school is legally qualified to operate — whether its campus, finances, and teaching staff meet domestic regulations. The 'MOE-approved list' page on this site shows the results of that review. International accreditation, by contrast, examines whether teaching quality has passed international peer evaluation. These are two parallel lines of verification, separate from legal registration. In practice, most well-regarded formal foreign schools have both, but 'has international accreditation' does not replace 'has legal registration,' and vice versa. A parent who checks only one may miss the other question that needs to be asked.

Official data source: K-12 Education Administration, Ministry of Education

How to Verify Directly, Not Just Take the School's Word

All three bodies provide publicly searchable official databases. The CIS website lists current member and accredited schools; WASC publishes a Directory of Schools annually, where you can check whether a particular school is on the list and when its accreditation expires; the 'Find an IB World School' tool on the IB website lets you search by country/school name — if nothing appears, the school is not officially authorized for that program; and Cambridge International's 'Find a Cambridge school' tool lets you verify that the school name and its registered Centre Number match. We recommend searching these official sites for the school's full English name, rather than looking only at accreditation logos in the school's own materials — a logo image by itself does not prove the accreditation is still valid.

Official data source: International Baccalaureate Organization (IB)

Accreditation Validity and Scope: Two Details Often Overlooked

CIS and WASC accreditations are not perpetual. WASC reviews every six years, and CIS also has a fixed-cycle review process; if not renewed on time, accreditation is lost. Official databases usually show the accreditation period, so be sure to check the expiration year. In addition, IB authorization is granted by program, not to the whole school. For example, a school might be authorized for DP (Diploma Programme) but not yet for PYP (Primary Years Programme). If a brochure vaguely says 'This school is an IB school,' it is wise to confirm which programme is actually authorized, and which grade levels it applies to.

Official data source: ACS WASC (Accrediting Commission for Schools)

Does a Lack of International Accreditation Mean a School Is Bad?

Not necessarily. Applying for and maintaining international accreditation requires considerable administrative cost and time. Some schools with strong programs and good reputations — especially smaller or newly established schools — may not have applied yet, or may still be in the process, so you cannot judge teaching quality solely by the absence of accreditation. Likewise, having accreditation does not mean every student will thrive there. International accreditation can serve as one reference point showing that a school's governance and quality have undergone external review, but it is still best to combine it with campus visits, feedback from current parents, faculty stability, and other sources of information, rather than treating it as the sole basis for a decision.