Founded
1964

Began with 30 students

Curriculum
American + IB

US High School Diploma, IB MYP and Diploma

Ages
3–19

Co-ed day school, preschool to Grade 12

Location
Victoria Island

Six-acre campus since 1981, government-leased land

Accreditation
CIS + MSA

Plus IB authorization

Fees
Not published

Absence confirmed on the official site

The short version

The short version

The American International School of Lagos (AISL) is a non-profit, independent day school on Victoria Island serving students ages 3 to 19. Founded in 1964 with 30 students, it moved to its current six-acre campus in 1981 and today serves a reported 500–600 students from 50–60+ nationalities, roughly 30% of them American.

It is accredited by the Council of International Schools and the Middle States Association, and offers an American standards-based programme with the IB Middle Years and Diploma programmes, leading to a US High School Diploma with the IB Diploma available.↗↗↗

For an expat family, the practical summary is this: if you are posted to Lagos with the US Consulate, an oil major or a multinational and you want the American or IB pathway, AISL is the reference school — the board structure alone tells you who it was built for.

The counterweights are cost opacity (no published fees anywhere first-party), the Victoria Island commute, and the question of whether you want a full expat-bubble environment or one of Lagos’s strong Nigerian-curriculum blend schools.

What the school is

A school whose boardroom explains its existence

AISL is a non-profit, parent-owned institution founded under Nigerian law, governed by a nine-member board that includes representatives of the AISL Association, major oil companies — reported as Shell, ExxonMobil and Chevron — and the US Ambassador’s appointee. BusinessDay independently describes board representation from major oil companies and the US Consulate.

This is not a school that merely serves the energy-and-diplomatic community; that community is written into its governance.↗↗↗

The US government link is old and structural. A US government post publication once listed the school’s superintendent through a State Department pouch address — “American International School Lagos, U.S.

Department of State, Lagos, Washington, D.C.” — and the campus itself sits on land leased from the government since 1981. Whether AISL currently appears on the Office of Overseas Schools assisted-schools list is something we could not confirm from a captured document; the board-level US representation, however, is reported by two independent Nigerian outlets.↗↗

Staffing is strikingly international even by international-school standards: according to the school’s 2024/25 annual report, as cited by BusinessDay, 83.1% of staff are expatriates against 16.9% local hires, with a reported 7:1 student-teacher ratio.

Facilities include science labs, a design and technology lab, a swimming pool, a library, an Innovation and Design Center and an Arts, Literature and Creativity building, with co-curriculars from coding and robotics to karate and track and field.↗↗

Academics in practice

American standards, the IB ladder, and an August-to-June year

AISL runs an inquiry-based early childhood programme, an American/international standards-based curriculum through elementary, middle and high school, the IB Middle Years Programme, and the IB Diploma in the final two years, with students able to graduate with both an American High School Diploma and the IB Diploma.

French and Spanish are taught as modern languages, and the school offers SAT and PSAT pathways. The school year runs August to June across two semesters.↗↗

The school does not publish IB Diploma results in a document we could capture, so we quote none.

Ask admissions for the latest Diploma pass rate and average score with cohort size, and for the university-destination list — AISL markets competitive university acceptances as one of its ten reasons to choose the school, so it should be ready with the underlying data.↗

Admissions and cost

The fee schedule that is not there — and where the numbers actually live

Start with the finding itself: AISL does not publish its fees. The admissions section of the school’s website carries no tuition page, and the obvious tuition URL returns nothing.

This is a policy, not a tradition — as recently as 2015/16 the school’s own site listed a full dollar schedule (application USD 654, registration USD 13,070, capital improvement USD 2,971, tuition USD 16,469–29,158 by grade, a special assessment of USD 9,506, and an ELL/support fee of USD 6,273).

Somewhere between then and now, AISL took its prices private.↗↗

The most authoritative current breakdown is not the school’s at all.

In May 2025, figures attributed to a US State Department breakdown put AISL at a one-time registration fee of USD 10,000; annual tuition of USD 17,638 (early childhood), USD 21,653 (kindergarten–Grade 5), USD 28,049 (Grades 6–8) and USD 32,165 (Grades 9–12); plus an annual capital fee of USD 3,000 and a special assessment fee of USD 10,486.

When the most credible price list for a school comes from a foreign government rather than the school, that tells you exactly who the school’s information flows are built for.↗

Naira figures exist but conflict, and the naira itself is the reason. BusinessDay’s June 2025 survey reported 2024/25 tuition of NGN 15.8 million to NGN 26.9 million; a 2026 fee tracker lists AISL at NGN 28 million to NGN 63 million.

The near-doubling is plausible — Nigeria floated the naira in June 2023 (NGN 475 to 750 per USD overnight, roughly NGN 1,319 by September 2026) and AISL’s cost base is heavily dollarised — but the 2026 figure is unverified against any first-party document.

Treat every naira number as dated, and get the current schedule from admissions in writing.↗↗↗

On process, the school is welcoming: the admissions office receives visitors year-round, books campus tours on request, and frames admission as a two-way fit between family values and the school’s mission. Families from 60+ nationalities have made that fit.

What the site does not say is anything about waitlists, priority categories or seat availability by grade — ask directly, and ask early; senior-secondary entry is reported across Lagos as the tightest point.↗↗

The family experience

Victoria Island, the compound commute, and the expat-mainland split

AISL sits on Walter Carrington Crescent on Victoria Island — Lagos’s business and financial centre — within the Ikoyi–Victoria Island–Lekki corridor where most expatriate families live.

Relocation guides describe that corridor as a USD-quoted world of gated estates, generators, boreholes and drivers, and the school’s community reflects it: American, Indian, British, Nigerian, Canadian, South African, Lebanese and Dutch families all form significant communities within the student body.↗↗↗

Two practical cautions belong on every family’s list. First, transport: we found no published school-bus information anywhere, so whether your estate is served, at what cost and on what schedule is a question for the admissions office — and in Lagos traffic, the answer shapes where you live.

Second, security and continuity: premium Lagos schools operate as secured, generator-backed campuses, and parents report the compound-to-compound routine as normal life. Treat both as things to verify in person on a weekday morning, not details to assume.↗↗

Our readConfidence: Medium

The reference American school for corporate and diplomatic Lagos — priced off the record

The structural record on AISL is unusually legible: 60 years of operation, a government-leased campus since 1981, dual CIS and Middle States accreditation, the full IB ladder, and a board that seats the oil majors and the US government. What is not legible — deliberately — is the price.

Our confidence is Medium: the school’s own publications cover everything except money, and every cost figure a family will find, including ours, is secondary reporting with a date attached. The State Department-attributed breakdown (May 2025) is the best of it.

The families AISL suits are those on corporate or diplomatic packages into the Ikoyi–Victoria Island–Lekki corridor who want the American or IB pathway in a genuinely international, heavily expatriate-staffed school.

The watch-items: get the current fee schedule and bus provision in writing before signing a housing lease; budget for the one-time charges (registration, capital and assessment fees have historically rivalled a term’s tuition); and decide consciously how much bubble you want — AISL is the most expat-concentrated learning environment in Nigeria, which is either the point or the problem.

Take these to the school

Questions that move beyond the tour script

Fees and contracts

  1. May we have the current full fee schedule in writing — tuition by grade, registration, capital, assessment and any support fees — and the payment currency and schedule?
  2. Which charges are one-time, which recur annually, and what is refundable if our posting ends mid-year?
  3. How have fees moved over the past three years in USD terms, and how does the school handle naira-dollar conversion for families paid in naira?

Admissions and availability

  1. For our children’s grades and entry date, what is the current seat availability, and is there a waitlist or any priority arrangement for corporate or consulate families?
  2. What does the assessment process involve for a child arriving mid-year from a British or Nigerian-curriculum school?
  3. How far ahead should we apply for an August start, and what documents does the file require?

Daily logistics

  1. Is there a school bus service, which estates and corridors does it serve, what does it cost, and what are the morning pick-up times from Ikoyi and Lekki Phase 1?
  2. What are the security, power-backup and visitor protocols on campus, and how did the school handle past city disruptions?
  3. May we see the latest IB Diploma results with cohort size and the recent university-destination list?

Continue your research

Choose your next step

Sources and further research

Where to verify and keep reading

We favor direct links to the exact page or document a family may need next. Access dates matter because admissions, tuition, leadership, and programs change.