The American School Foundation

The short version

The short version

The American School Foundation (ASF) is a non-profit, coeducational American college-preparatory school in Mexico City, teaching more than 2,500 students from over 70 nationalities across K1 to Grade 12.

Founded in 1888, it describes itself as the oldest continuously operating accredited American school outside the United States, and it layers the full IB continuum (PYP, MYP and the Diploma Programme) and Advanced Placement courses on top of the American diploma track.↗↗

For an expat family, the practical summary is this: ASF is the default shortlist entry if you want an American or IB pathway in Mexico City, with the deepest history in the market and entry to match.

Budget carefully — on the published 2026/27 schedule the first year at kindergarten entry runs to about MXN 425,000 once the two one-time charges join tuition, and billing follows local customs (monthly instalments August to May, registration paid in December and March) that differ from a single annual invoice.↗↗

What the school is

A 19th-century foundation with a five-way diploma structure

ASF’s legal form is The American School Foundation, A.C. — a Mexican asociación civil, the non-profit structure used by the country’s established international schools — known in Spanish as Colegio Americano.

The school states plainly that it is a non-profit organisation delivering an American independent education to international and Mexican students, and reports 405 students on financial aid within its 2,500-plus enrolment.↗↗

The diploma structure is the school’s defining academic feature.

ASF is an IB World School offering the Primary Years, Middle Years and Diploma Programmes, also offers College Board Advanced Placement, and sits inside the Mexican system as well: SEP recognises its studies and UNAM validates high-school coursework, so graduates can leave with American, Mexican and IB credentials in combination.

Accreditation runs through the US regional line now branded Cognia (formerly SACS/AdvancED), and the school is a long-standing member of ASOMEX, the association of American schools in Mexico.↗↗

One structural note for families comparing systems: because ASF is woven into SEP/UNAM recognition, it suits families who may move between the Mexican and international systems, as well as those headed for US or global universities.

The trade-off is a bilingual reality — English is the language of instruction, but the social language of the school is largely Spanish, and roughly 60 per cent of students are Mexican nationals on aggregator data.

For many families that is the point of choosing ASF; for those wanting a more expat-bubble environment it is worth a candid conversation on the visit.↗

Academics in practice

IB and AP under an American roof

Students follow a US-style programme toward the American high school diploma, with the IB Diploma Programme and Advanced Placement courses as the upper-school accelerators; the school’s viewbook describes PYP in the elementary years, MYP in the middle years, and optional IB Diploma and AP tracks — including the AP Capstone — in the Upper School.

Aggregator data puts the average class at 22 students.↗↗

ASF does not publish IB Diploma scores or matriculation statistics in the public sources we checked, so we deliberately quote none.

Ask admissions for the most recent results with cohort sizes and a three-year university-destination list; the school reports that nearly all Upper School graduates go on to college, but the current numbers belong to the school, not to secondary retellings — including this one.

There is no KHDA- or BSO-style government inspection of American schools in Mexico City, so the external quality evidence is the Cognia accreditation cycle, the IB authorization, and the school’s longevity. That puts more weight on the visit and on conversations with current parents — see the questions below.

Admissions and cost

Admissions, and a year-one bill built in Mexican layers

ASF separates applicants into three tracks — K1 to Grade 1, Grades 2 to 11, and families arriving from abroad — and charges a MXN 2,045 application and testing fee.

After the application deadline, qualified students are invited to testing sessions subject to available space; third-party and consular guides consistently describe ASF as one of the city’s two most competitive entries, advising families to apply six to nine months ahead for the youngest entry points.↗↗

On the published 2026/27 schedule, annual tuition is MXN 278,100 in kindergarten, MXN 320,500 in Grades 1-5, MXN 346,300 in Grades 6-8 and MXN 353,800 in Grades 9-12.

On top of the first year’s tuition come two one-time charges — an admission fee of MXN 119,242 and a registration fee of MXN 27,810 — which put the year-one bill at MXN 425,152 for a kindergarten entrant, and roughly MXN 466,000 to MXN 501,000 for an older child, before bus, lunch and extras.

For trajectory: the 2025/26 figures were MXN 122,120 admission, MXN 26,235 registration and MXN 262,350 kindergarten tuition — about MXN 410,700 all-in at kindergarten entry — so the one-time charges move a few per cent a year in either direction.↗

The billing rhythm is a local custom worth planning around: ASF charges tuition in monthly instalments from August through May — ten payments — while the annual registration fee is collected in December and March.

That smooths cash flow compared with a single August invoice, but it also means the registration charge lands twice a year as a separate line, and the one-time admission and registration fees sit outside the monthly plan entirely.↗

The school has long run a need-based financial aid programme — its published materials describe awards of 25 to 75 per cent of the total cost of attendance decided after a socioeconomic study — and reports 405 aided students today.

If cost is the constraint, ask for the current aid parameters at the same time as the application; the process runs alongside admissions rather than after it.↗↗

The family experience

Location, community and the daily reality

The campus sits at Bondojito 215 in Colonia Las Américas, in the Álvaro Obregón borough on the western side of the city — within commuting range of Lomas, Polanco and the Santa Fe corridor, though Mexico City traffic makes any cross-town school run worth testing at 7am before you sign a lease.

Bus and lunch services are available, and Foreign Service families report 30-40 minute school bus rides as standard across the city’s international schools.↗↗

Parent sentiment in the public record is mixed in the way large, old schools tend to be. US Foreign Service post-report parents describe ASF as academically strong while reporting bullying concerns, and one long-running expat review thread describes administration communication as a weak point across the city’s three big English-language schools.

These are individual reported experiences, not verdicts — but they translate directly into visit questions about anti-bullying practice and how the school communicates with internationally mobile families.↗↗

For foreign families, note the residency dimension: expat guides list proof of legal residency in Mexico among typical admissions requirements for foreign nationals, and the school requires students to live with a parent or legal guardian while enrolled.

Confirm the current documentation list with admissions as part of the application, especially if your visa status will be in progress when you apply.↗↗

Take these to the school

Questions that move beyond the tour script