Best International Schools in Basel: 2026 Guide for Families

Quick answer: Which are the best international schools in Basel? It depends on age and language. International School Basel runs all three IB programmes, SIS Basel teaches in German and English to the IB Diploma or Gymnasium, and Academia offers IGCSE and A Levels by Basel SBB. For 2026-27, ISB tuition runs from CHF 23,980 to CHF 38,000 a year.

Last reviewed: October 2026 by Catherine from ISA. Fee ranges are indicative; always confirm with the school.

Ask three families in Basel which school is best and you will probably get three different answers, all of them reasonable. A pharma researcher on a three-year contract, a Swiss-American couple who intend to stay, and a cross-border commuter living in Lörrach are solving different problems. Looking for the best international schools in Basel is therefore less about a league table and more about matching the school to how long you will stay and which language your child will need at 18.

We went through the 2026-27 fee lists and admissions pages of the main schools, checked how the cantonal system is organised, and set out what each option is good at. The shortlist below covers five schools, from a toddler-friendly British primary to a large IB school on three campuses.

Why Basel, and where families end up living

Basel's international population is anchored by life sciences, banking and research institutions, and by its unusual position where Switzerland, France and Germany meet. Many families do not live in the city itself. Some rent in Basel-Landschaft suburbs such as Reinach, Binningen or Allschwil; others cross the border every day from Weil am Rhein, Lörrach or Saint-Louis to save on housing.

That spread shapes the school decision more than in most cities. ISB, with about 1,200 students, is not in Basel-Stadt at all: its senior campus is at Fleischbachstrasse 2 in Reinach, in the neighbouring canton of Basel-Landschaft, with younger pupils (Early Childhood 1 to Grade 6) in Aesch and Grades 7 and 8 in Fiechten. SIS sits on Erlenstrasse in Kleinbasel, on the right bank of the Rhine. Academia's site on Hochstrasse is right next to Basel SBB station, which makes it unusually easy for families who use the train, and ELABasel is on Gartenstrasse in the city centre.

If you are commuting from Germany or France, check two things early: whether the school's bus crosses the border, and how long the border crossing takes at peak hours on a school morning.

How the local system works, and the curricula on offer

Basel-Stadt public schools follow the HarmoS structure: two years of compulsory Kindergarten, six years of Primarschule and three years of Sekundarschule, eleven years in total, according to the canton. The school year starts in mid-August. Children who arrive with little or no German must attend a playgroup on three half-days a week in the year before Kindergarten, which is worth knowing if you are weighing the local system against a private school for a three-year-old.

Alongside that German-language public system, the private and international sector offers:

International Baccalaureate: ISB runs the Primary Years, Middle Years and Diploma Programmes; SIS offers the IB Diploma in Grades 11 and 12.
Swiss bilingual pathway: SIS teaches in German and English from kindergarten through to its Gymnasium; Academia Bilingual School follows Lehrplan 21 in both languages.
British and Cambridge: Academia International School prepares students for IGCSE and A Level; ELABasel follows the British Early Years Foundation Stage and then the Cambridge pathway towards IGCSE.
English-German bilingual primary within an IB school: ISB's junior school offers either English or English-German bilingual classes.

Five schools worth a visit

International School Basel

ISB is a not-for-profit day school for students aged 3 to 18 with about 1,200 students, according to the school, and it lists accreditation by the New England Association of Schools and Colleges. Of the five schools here, it is the one that runs all three IB programmes, split across Aesch (Early Childhood 1 to Grade 6), Fiechten (Grades 7 and 8) and Reinach (Grades 9 to 12). Tuition for 2026-27 starts at CHF 28,210 for Early Childhood 3 to Grade 5 and reaches CHF 38,000 in Grades 11 and 12.

Our tip: budget for the one-off Development Fee of CHF 4,500, which the school says is non-refundable and not deducted from tuition. Families whose employer covers "school fees" should confirm that this is included.

SIS Swiss International School Basel

SIS has taught bilingually in German and English since 1999 and says it has about 360 students from more than 40 nationalities. It runs from kindergarten to university entrance, with two upper-secondary routes: a Gymnasium track and the IB Diploma. Its 2026-27 price list bills tuition per semester: CHF 12,580 a semester for Primary 1 to 6 and CHF 14,980 a semester for the IB Diploma, paid at the start of each semester or in six monthly instalments with a 2 per cent surcharge.

Our tip: SIS suits families who expect to stay in Switzerland and want a child who is comfortable at a Swiss university or in a Swiss workplace. Because the price list is per semester, double each figure to compare it with the annual fees quoted by other schools.

Academia International School Basel

Founded in 2009 and part of the Academia group, which also has schools in Zurich and Winterthur, the international school shares its Hochstrasse 16 site with its bilingual sister school. Together they have more than 300 students from kindergarten to Year 12, the school says, and upper secondary follows IGCSE and A Level. Fees are not published online, so ask for the current schedule at your first visit.

Our tip: this is the most natural fit in Basel for a teenager heading for a UK university, or for a family that wants a smaller school close to the station.

Academia Bilingual School Basel

The bilingual school opened in 2010 and says it is recognised by the canton of Basel-Stadt, with a transfer agreement that lets pupils move into the state system. Each primary class has two native-speaking teachers and lessons switch between German and English every half-week, following Lehrplan 21 alongside the Cambridge curriculum; French starts in Year 3. After Year 6, pupils can move into Academia's lower secondary on the same site without an entrance exam, according to the school.

Our tip: if you are not sure whether you will stay, a recognised bilingual primary keeps the door open to the local Sekundarschule later.

ELABasel International School

ELABasel describes itself as a Swiss-British school that has been part of the Basel community since 1993, with about 360 children and 90 staff from 35 countries on two campuses in the centre of Basel. Children start from 3 months in Early Years, follow the Cambridge pathway in primary, and the school now runs a secondary school for ages 12 to 16 with a Cambridge International Stream and a Swiss bilingual stream based on Lehrplan 21. The school says pupils in the bilingual stream can move into the Basel-Stadt system in Year 11 after Year 10. Fees are not published on its website, so ask admissions for the current list.

Our tip: ELABasel suits working parents of very young children who want one setting from crèche onwards. Its secondary school is new, so ask how many pupils are in each year group and which exams the oldest classes will sit.

School fees in Basel: what to budget for 2026-27

Fees in Basel are set and paid in Swiss francs. For families paid in euros or dollars, a movement in the franc can add or remove thousands from the annual bill, so budget with a margin.

Early years: CHF 14,390 (five mornings) to CHF 23,980 (five full days) at ISB for Early Childhood 1 and 2; SIS lists CHF 11,640 per semester for Kindergarten 1.
Primary: CHF 28,210 at ISB; CHF 12,580 per semester at SIS, or CHF 25,160 for the full year.
Lower secondary: CHF 32,280 to CHF 33,650 at ISB; CHF 15,740 to CHF 16,010 per semester at SIS.
Diploma years: CHF 38,000 at ISB (roughly EUR 40,000); CHF 14,980 per semester for the IB Diploma at SIS.

The extras:

Registration: CHF 600 for the first child and CHF 500 for each sibling at SIS, payable before the place is confirmed.
Development fee: CHF 4,500 once at ISB for new students.
After-school care: CHF 30 a day at ISB with trimester registration; CHF 2,000 (primary) to CHF 2,400 (kindergarten) for five afternoons a week at SIS.
Holiday care: CHF 90 a day with pre-registration at ISB.
IB exam fees: paid by parents at SIS; ask at every school.
Sibling discount: 10 per cent on the younger child's tuition at SIS.
Transport, lunches and uniforms: priced separately; request the full list.

Advice from the Basel school run

Decide on German early. A child who will spend ten years in Basel and learns no German is cut off from local sport clubs, friends next door and, later, much of the job market. Bilingual schools such as SIS and Academia Bilingual build German in; English-medium schools teach it as a subject. Neither is wrong, but the choice is easier to make at five than at twelve.

Think about canton and border as well as school. Living in Basel-Landschaft or across the border can make ISB's Reinach and Aesch campuses easier to reach than a school in the city centre. Do the journey at 7:30 before you commit to a flat.

Ask about waiting lists in the early years. Kindergarten places at smaller schools fill up first, particularly for August entry. Contact the admissions office as soon as your move date is fixed, even if you do not yet have an address.

See the full Swiss ranking

To compare Basel's schools with those elsewhere in the country, explore our ranking of the best international schools in Switzerland, where each school's stages, curricula and family ratings are set out side by side.

More guides to schools in Basel

Frequently asked questions

How much does International School Basel cost in 2026-27?

ISB's published 2026-27 tuition ranges from CHF 14,390 for five mornings in Early Childhood 1 to CHF 38,000 for Grades 11 and 12. Primary is CHF 28,210 and Grades 6 to 8 cost CHF 32,280. New students also pay a one-off, non-refundable Development Fee of CHF 4,500 that is not deducted from tuition.

Is there a bilingual German-English school in Basel?

Yes. SIS Swiss International School Basel has taught in German and English since 1999, from kindergarten to the Gymnasium or the IB Diploma. Academia Bilingual School Basel alternates German and English every half-week in primary, and ISB's junior school also offers an English-German bilingual stream alongside its English-only classes.

At what age do children start school in Basel-Stadt?

Children in Basel-Stadt start two years of compulsory Kindergarten at around age 4, followed by six years of Primarschule and three of Sekundarschule. The school year begins in mid-August. Children with little or no German must attend a playgroup three half-days a week in the year before Kindergarten.