British Primary School of Wilanow

Part of the University of Cambridge. It allows a school to teach the Cambridge programmes and to enter pupils for the exams. There are four stages and they are authorised separately: primary, lower secondary, IGCSE and A Level. If the stages are known they are named in the line below; if that line is missing, the school does not publish them, and the Cambridge registry does not show stages either - it gives only the name of the centre, the country and whether private candidates are accepted. Cambridge calls what it does registration rather than accreditation, and the network holds about ten thousand schools.

What the badge means for this school. The school is allowed to run this programme and to award its certificate. This is a confirmation of the programme, not a judgement on the school as a whole. The entry stands in the organisation's public register - anyone can check it. At this school: Primary (ages 5-11), Lower Secondary (ages 11-14). Primary is the primary stage, ages 5 to 11: English, mathematics and science to Cambridge syllabuses. At the end of the stage a school may run the optional Checkpoint test, which is marked in Cambridge. Lower Secondary is the middle stage, ages 11 to 14, with the same optional Checkpoint test at the end.

An association of British schools abroad with a quality inspection of its own. It has nine membership categories, and the word "accredited" appears in seven of them, although COBIS does its own inspection in one: in the rest it recognises an accreditation granted by somebody else.

What the badge means for this school. The school has been through this organisation's accreditation. It was judged as a whole: governance, safeguarding, staff, premises, teaching. The entry stands in the organisation's public register - anyone can check it.

The state school programme of the country the school stands in: it is set by that country's ministry of education, which also licenses the school and awards the leaving certificate. That certificate is used for entry to local universities, and abroad it is matched to the local one.

What this means for this school. This entry does not count towards the score, and that is deliberate. Every lawful school in a country works to the national programme, so on its own it tells one school apart from no other - unlike the French, German or Russian programmes, which are carried abroad and confirmed by the register of their organisation. We show it because a parent needs to know what programme their child is taught and what certificate the child will get. Counting it would lift the whole ranking at once and still tell nobody apart.

A group of private international schools, founded in 2013 by five leaders from international education. The numbers diverge: the home page gives 121 schools in 26 countries and "132,000+" pupils, the "About us" page - 106 schools in 25 countries, the "Who and where we are" page - 121 schools in more than 26 markets and 118,000 pupils. The site writes that schools keep their own character, brand and curriculum when they join ISP, but does not say whether ISP buys the schools, manages them under contract or brings them together by membership.

What this means for this school. The network owns or operates the school. Its accreditation and programme authorisation the school obtains separately, in its own name.