International comparative data
Montessori education is a genuinely global phenomenon, unevenly distributed, unevenly funded, and unevenly documented. This page gathers the clearest available numbers and, just as importantly, says plainly where those numbers are soft. No central worldwide registry of Montessori schools exists, so every count below is a best estimate from a named source, not an authoritative census. Treat any number here the way you’d treat any other secondary statistic in a literature review.
How many Montessori schools exist worldwide
Estimates vary meaningfully depending on methodology:
- The 2022 Global Montessori Census (Debs et al., Journal of Montessori Research 8(2), 2022) documented 15,763 Montessori schools worldwide. It surveyed national and regional Montessori organisations (81 responses from 59 countries) and triangulated their answers with other published estimates and direct inquiries in key countries, resting on those organisations’ broadest definitions of a Montessori programme. Its authors state that several countries may be undercounted, and that the English-language survey, first sent out by AMI, may have missed schools working in local languages.
- An earlier estimate of 22,000 schools worldwide, made in 2006 by AMI together with several other Montessori organisations, had country-level documentation for only two countries, the United Kingdom and Australia, according to the census authors.
Neither number should be read as precise. The gap between them is itself informative: it shows how much any worldwide count depends on how, and by whom, the counting is done.
Public versus private funding
The same census estimates that roughly 9% of Montessori schools worldwide are fully government funded, and that the United States, Thailand, the Netherlands and India have the largest numbers of government-funded or public Montessori programmes. For the United States it cites the national Montessori census kept by the National Center for Montessori in the Public Sector, in which 579 of the 2,728 participating schools were publicly funded programmes. The authors add that respondents may have read their funding question in different ways, and that the line between government schools and privately run schools with some public funding needs further study. The 9% figure therefore says little about countries where privately run schools receive public funding; this page does not cover Sweden. Even so, most of the schools counted are not fully government funded, which is worth holding in mind whenever “the research on Montessori” is cited without specifying which funding context it was studied in (see Evidence Status).
The Netherlands: the clearest outlier
The Netherlands has, by a wide margin, the highest proportion of children in Montessori education of any country, at roughly 5%, and almost all of it sits inside the ordinary, publicly funded Dutch state school system rather than as a private alternative. As of recent counts, this amounts to roughly 219 Montessori schools (around 162 primary, 19 secondary, and 38 preschool), with Montessori treated as one accepted pedagogical stream within mainstream state education rather than a fringe or elite option. This is structurally different from most other countries, where Montessori provision is predominantly private and therefore less accessible by default to lower-income families.
AMI and AMS: scale and structure, not just rivalry
- AMI (Association Montessori Internationale), founded by Montessori herself in 1929 and based in Amsterdam, runs a single global training syllabus across four age-specific diplomas (0–3, 3–6, 6–12, 12–18), prioritising closeness to her original lectures and materials and an internationally portable credential.
- AMS (American Montessori Society), founded in the US in 1960 by Nancy Rambusch, accredits a more varied network of independently run Teacher Education Programs, generally with more flexible training length and, in some settings, more blending with mainstream school conventions (grading, standardised testing).
- MACTE, founded in 1995, accredits training affiliated with both of the above and other organisations, functioning as a cross-organisation quality baseline rather than a third rival brand.
- Other bodies with a narrower, genuinely complementary remit: NAMTA (adolescent/secondary programme development, notably extending Montessori’s own sketched-out Erdkinder concept), Montessori Europe (a federation of national societies), and numerous national associations not covered individually here.
None of these organisations is treated on this site as more authoritative than the evidence it can point to (see the editorial policy). They sometimes disagree, including historically over the word “Montessori” itself (Choosing a School); this project reports the disagreement rather than taking a side.
India: verified against a peer-reviewed source
The split flagged as single-source in an earlier version of this page has now been fully checked: Debs, M. (2022), “Montessori in India: Adapted, Competing, and Contested Framings, 1915–2021,” History of Education Quarterly, 62(4), 387–417 (DOI: 10.1017/heq.2022.25). It confirms both parts of the original claim: an “orthodox”-versus-adapted split, in which wealthier children received Montessori provision close to Montessori’s own fidelity standard while poorer children were served by deliberately adapted, low-cost versions (the study cites educator Tarabai Modak’s materials improvised from shells, seeds and bamboo as one such adaptation), and confirms that, starting in 1968, Montessori became the preschool curriculum used across Tibetan refugee schools in India, supporting language and cultural preservation in exile.
Mira Debs is also the lead author of the 2022 Global Montessori Census cited earlier on this page; the same individual researcher accounts for two of this page’s strongest data points, which is worth knowing when judging how much independent corroboration the international figures here actually rest on. This project has confirmed the citation via Crossref publisher metadata but has not read the full text behind the journal’s paywall.
The United Kingdom: a smaller, mostly private sector
The UK has roughly 650–700 Montessori schools and nurseries, serving an estimated 30,000+ children, concentrated in England and London (Montessori Schools Association census figures). Unlike the Netherlands, UK provision is predominantly private and fee-paying (typically £800–£1,500 per month for nurseries and £10,000–£20,000 per year for primary and secondary provision), though many nurseries do accept the UK government’s funded hours for three- and four-year-olds. This makes the UK a useful contrast case: a large, visible Montessori sector that is nonetheless structurally closer to most of the world (private, cost- gated) than to the Dutch exception above.
What this data does, and doesn’t, tell you
A country having a high proportion of Montessori enrolment (the Netherlands) says nothing by itself about fidelity to the original method, and a low public-funding share globally says nothing by itself about quality; it mostly reflects history, policy and cost. Readers using this page for comparative or academic purposes should treat every figure here as a starting point for their own source-checking, not an end point.
Correction, 11 October 2026: an earlier version of this page described the 2022 Global Montessori Census as a count of verified schools made by direct outreach, set against advocacy-sector estimates of 20,000–22,000 said to reflect broader inclusion criteria; said that only around 9% of Montessori schools are publicly funded, without the census’s own definition (fully government funded) or its caveats; named three countries as the centres of public funding, where the census names four, including India; and gave the United States figures as roughly 600 publicly funded schools out of an estimated 3,000, where the census cites 579 publicly funded programmes among the 2,728 schools that had taken part in the national Montessori census kept by the National Center for Montessori in the Public Sector. The published text of the census does not support the earlier wording. See the corrections log.
Sources consulted: Debs, M., de Brouwer, J., Murray, A.K., Lawrence, L., Tyne, M. and von der Wehl, C., “Global Diffusion of Montessori Schools: A Report From the 2022 Global Montessori Census,” Journal of Montessori Research 8(2):1–15 (2022), DOI 10.17161/jomr.v8i2.18675 (full text read for this page); Dutch Montessori Association figures as reported via secondary coverage (2023); AMI, AMS and MACTE public documentation (2024–2025); Debs, M., “Montessori in India: Adapted, Competing, and Contested Framings, 1915–2021,” History of Education Quarterly 62(4):387–417 (2022), DOI 10.1017/heq.2022.25; Montessori Schools Association UK census figures via Nursery World (2024–2025).