The ranking holds 4 schools with an international accreditation or an authorised programme. The British Cambridge route, IGCSE and A-Level, at 3.
We do not take reviews from maps and directories: their terms forbid it, and nobody checks the quality there. Everything below comes from the official registers of the accrediting organisations and from the schools' own sites, and every fact carries its source and the date of the check.
All 4 schools in the ranking are private. We have not yet found a state school in San Isidro with an international accreditation. The type of school does not affect the score: private and state schools sit in one list and are scored by the same formula, and only verifiable data moves the number.
The British Cambridge programme - IGCSE and A-Level - is taught at 3 schools in San Isidro: Colegio Santos Unidos, Colegio Nuestra Señora de la Unidad, Pilgrims' College - Sede San Isidro.
Comparing schools on a single feature is useless: the most expensive is not the best, and a famous name says nothing about what is backed by documents. The score is therefore built from nine criteria with different weights - from academic programmes and accreditation to facilities, clubs and fees relative to other schools in the country.
A criterion counts towards the score only when there is verifiable data behind it. That is why every score says how many of the nine criteria were counted: at schools in San Isidro that is 6 out of 9 on average. A school with a detailed site and a school with no site cannot earn an equally reliable score, and that is shown rather than hidden.
Ratings and reviews from Google Maps, Yandex Maps and 2GIS are not used: their terms forbid aggregation. Only verified reviews left here count. Full methodology →
Colegio Santos Unidos comes first with 68.7 points out of 100, counted from 3 of the 9 criteria. Next come Colegio Nuestra Señora de la Unidad (66.7) and Colegio Labardén (65.0). The score is built from data anyone can check: accreditations found in official registers, programmes, facilities and published fees. A place in the ranking is not for sale.
The ranking holds 4 schools: 4 private. We found no state school in San Isidro with an international accreditation. Private and state schools go into the ranking on equal terms.
IGCSE and A-Level are offered by 3 schools: Colegio Santos Unidos, Colegio Nuestra Señora de la Unidad, Pilgrims' College - Sede San Isidro.
The earliest intake starts at 1 year old. 2 schools have a preschool section.
The score of every school adds up from nine criteria with different weights: academic programmes, accreditation, facilities, clubs, the fee against other schools in the country, reviews, university destinations, safety and teachers. A criterion counts only when there is data behind it that can be checked, so every score says how many of the nine were counted. Right now that is 6 out of 9 on average. We do not use reviews from maps or directories.