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SIS Swiss International School Basel

Switzerland, Basel

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The school at a glance
Instructs in German, English
Fees CHF 22,820 - 34,020
Ages 3 - 18 years
Pupil numbers 500
Type Co-educational
Opened 1999
Bus Service No
Part of
Swiss Academia International School
Academic offering
Curriculum British Curriculum, Swiss Curriculum
Taught languages French
Typical class size 15
Strengths Sport, Languages, Academic Enrichment
Clubs Academic and Intellectual, Cultural and Language, Community and Service
Stages Early Years, Primary School, Secondary School, Sixth Form
Introduction

SIS Basel International School Basel is a bilingual day school in Basel, Switzerland for students aged 3 to 18. The school offers a bespoke curriculum that combines the Lehrplan 21 with the British curriculum and SIS-developed content, enabling a 50/50 split of English and German from kindergarten through college. Children learn across six curriculum areas: Personal and Social Development; Language Development; Mathematics; Knowledge and Understanding of the World; Physical Development; and Creative Development, taught through immersion with two language teachers and alternating days. The school operates from 7:30 a.m. to 6 p.m., with integrated before- and after-school care, lunch supervision, and a range of clubs and regular trips. With around 500 students, SIS Basel emphasises bilingual education and international-mindedness, guided by Principal Marcel Brunner since August 2023. Facilities include an outdoor football field, a cafeteria, and technology-enhanced learning across Kindergarten to SIS Bilingual College, including the IB Diploma Programme today.

This campus is part of Swiss Academia International School

Erlenstrasse 15, 4058 Basel, Switzerland

The Essentials

SIS Swiss International School Basel has 500 pupils, typical class sizes of 15, instruction in German, English.

Location
Basel, Switzerland

Stages
Kindergarten through to College, including Kindergarten, Primary School, Secondary School, SIS Bilingual College and the International Baccalaureate Diploma Programme (IBDP); continuity from Kindergarten to College.

Type
Private bilingual day school

Pupil Nationality Mix
396 enrolled students; 40+ nationalities represented

Country affiliation
Switzerland

School day structure
Lunch, homework supervision, before- and after-school care, flexible drop-off and pickup times
Diving Deeper

Boarding Arrangements
No boarding is offered; SIS Basel operates as a day school.

Food Options
Lunch is provided; cafeteria available; before- and after-school care offered as part of the day program.

Governance and Ownership
Private educational institution financed solely by school fees and not subsidised by the Swiss government; part of SIS Swiss International Schools Schweiz AG.
Fees

Annual tuition at SIS Swiss International School Basel ranges from CHF 22,820 to CHF 34,020 for 2026/27.

Application / Registration Fee

- One-time registration (enrolment) fee: First child CHF 600. Each additional child CHF 500. This fee is non-refundable and a place at the school is only guaranteed once the registration fee has been paid.

Tuition fees (per semester) and annual totals by school year group

Note: Tuition is billed in advance per semester. The figures below show the one-payment (semester) amount and the equivalent annual amount (two semesters). Monthly instalment amounts shown are the six-month instalments for a semester (these instalments include a 2% surcharge and are paid over six months for the semester).

- Kindergarten 1 & 2:
- Per semester: CHF 11,410.
- Annual (2 semesters): CHF 22,820.
- 6 monthly instalments (per month during the semester): CHF 1,940 (total per semester when paid in instalments: CHF 11,640).

- Primary Intro:
- Per semester: CHF 12,330.
- Annual: CHF 24,660.
- 6 monthly instalments: CHF 2,096 (total per semester by instalments: CHF 12,576).

- Primary (Years 1–6):
- Per semester: CHF 12,330.
- Annual: CHF 24,660.
- 6 monthly instalments: CHF 2,096 (total per semester by instalments: CHF 12,576).

- Lower Secondary (Years 7–9):
- Per semester: CHF 15,430.
- Annual: CHF 30,860.
- 6 monthly instalments: CHF 2,623 (total per semester by instalments: CHF 15,738).

- Year 10:
- Per semester: CHF 15,700.
- Annual: CHF 31,400.
- 6 monthly instalments: CHF 2,669 (total per semester by instalments: CHF 16,014).

- Years 11 & 12:
- Per semester: CHF 17,010.
- Annual: CHF 34,020.
- 6 monthly instalments: CHF 2,892 (total per semester by instalments: CHF 17,352).

- International Baccalaureate (IBDP):
- Per semester: CHF 14,690.
- Annual: CHF 29,380.
- 6 monthly instalments: CHF 2,497 (total per semester by instalments: CHF 14,982).

Billing schedule and payment terms

- School fees are billed in advance per semester; fees for mid-term admissions are prorated. On request, payment by monthly instalments (six monthly instalments per semester) is possible; instalments carry a 2% surcharge.

- School Fees are due before the start of each semester. Late payment may result in collection action; interest on arrears is charged at 5% p.a., dunning costs of CHF 20 per reminder (from the second reminder) are applicable, and collection charges may be added. Certificates or diplomas may be withheld until outstanding School Fees are paid or guaranteed.

- A sibling discount of 10% on the school fees is granted for the second, third, etc., child; the reduction applies to the younger child(ren).

Boarding fees

- Boarding is not applicable. SIS Basel is a bilingual day school (no boarding programme).

Other costs and optional services

- After‑school care (optional):
- Coupon booklet (six hours) CHF 102.
- Kindergarten / Primary Intro: Full week (5 days) CHF 2,400; one day per week CHF 480; single booking per hour CHF 18.
- Primary: Full week (5 days) CHF 2,000; one day per week CHF 400; single booking per hour CHF 18.

- Clubs and extracurricular activities: costs vary by offer and semester; these are additional and charged separately.

- School Fees do not include costs for excursions, class trips, camps, external examinations and certificates, or additional services and activities; such items are charged separately.

- No separate uniform fee is listed for SIS Basel in the published fee information; no uniform charge is specified among the standard school fees.

Refunds, cancellations and termination (important points)

- The registration (enrolment) fee is non-refundable. If a reserved place is not used after payment of the registration fee, there is no right to reimbursement.

- Notification deadlines for ordinary termination: to terminate a contract at the end of a semester, notice must be received by December 1 (winter semester) or May 1 (summer semester). If no valid notice is received by those dates, the School Contract is automatically extended for the next semester. Late termination after these dates triggers a compensation charge of 25% of the School Fees for the corresponding semester.

- Leaving mid‑semester: fees are charged up to the end of the week in which the student leaves and are calculated pro rata based on the number of weeks attended (school vacations are not taken into account). If termination is not notified at least ten calendar weeks prior to the end of the week in which the student leaves, a compensation charge of 25% of the School Fees for the corresponding semester may apply.

- Force majeure: if authorities order the school's closure due to force majeure (for example epidemic, pandemic, natural disaster), there is no right to a refund of school fees.

Fee payment options and invoicing

- Invoices and credit notes are issued with a QR payment section (Swiss QR invoice format) and are available in the Parents' Portal. Additional services (lunch, after‑school care, clubs, excursions) can be booked via the school's Webshop, which is integrated with the Parents' systems. Parents receive payment slips or invoicing details as part of the registration and contracting process.

- Payment by instalment (monthly) is offered on request and carries the indicated surcharge (2% for the six‑month instalment option per semester). School Fees must be paid or guaranteed at the time of registration for external examinations.

Administrative and statutory notes relevant to fees

- School Fees are published in the current price list; the School's General Terms and Conditions set out payment deadlines, late‑payment interest and dunning charges, and the legal procedures for termination and refunds/compensation. Withholding of certificates for unpaid fees is possible.

Version note: the published fee schedule for SIS Basel is listed for the 2025/26 school year in the school's fee overview and accompanying terms. The figures above reflect the published one‑semester amounts and related terms and optional service charges as presented in the school's current fee information.
Academics

SIS Swiss International School Basel teaches British Curriculum, Swiss Curriculum for students aged 3 to 18.

Curriculum
SIS Basel offers an English/German bilingual kindergarten with continuity from Kindergarten to College. The curriculum combines the Swiss curriculum (Lehrplan 21) with the British curriculum and SIS-developed content to promote bilingualism. Children spend 50% of their time in English and 50% in German. The six curriculum areas are Personal and Social Development; Language Development; Mathematics; Knowledge and Understanding of the World; Physical Development; and Creative Development. Language is learned through immersion with a German-speaking and an English-speaking teacher, with languages used on alternating days. The day runs from 7:30 a.m. to 6 p.m., with after-school care and a range of clubs, and regular trips and events form part of the program.
Wellbeing

Social and Emotional Learning (SEL)
The SIS Basel learning environment is open, multicultural and nurturing. The school uses a value-centered approach that supports independence and personal development. Students develop social, emotional and procedural skills and attitudes as part of their education. English and German are used across the curriculum, reinforcing intercultural communication and collaborative learning.

English as an Additional Language (EAL)
From kindergarten onward, bilingual education in German and English is provided with immersion that allocates 50% of learning time to English and 50% to German. A German- and an English-native speaking teaching team supports language development, with language acquired through immersion. In primary school, students acquire high-level language skills in both German and English. In the bilingual college, English and German are equally important as languages of instruction, with options for the IB Diploma alongside the bilingual Swiss Matura.

Mental Wellbeing
Social, emotional and procedural skills and attitudes are part of the general education. SIS Basel provides an open, multicultural and nurturing learning environment that supports wellbeing. The day-school concept is structured, varied and designed to promote stability and student engagement. Extracurricular activities and the school community contribute to a supportive social environment.
Parent Experience

History
Private bilingual day school in Basel with approximately 500 students from three years old through Year 12. The bilingual educational concept of SIS Swiss International School has been implemented here since 1999. The school is located at Erlenstrasse 15, Basel 4058. Marcel Brunner has been principal since 1 August 2023.

Community
The school community is multicultural, representing more than forty nationalities. Approximately 500 students from ages 3 to Year 12 study on the campus. The leadership team includes Marcel Brunner (Principal) and Bret Simner (Head of Bilingual International College and IB Coordinator); the team engages in ongoing professional development. An Open House is scheduled for March 18, 2026, from 09:00 to 12:00.
Facilities

Facilities Overview
SIS Basel is a bilingual day school from Kindergarten through to College. The school has a large blue outdoor sports field used for football. The school has a cafeteria where hot lunches are served and all students eat in the cafeteria under supervision. Before- and after-school care is available, and lunchtime supervision is included in the school fees.

Sports Facilities
The school has a large outdoor sports field used for football.

Academic Facilities
The academic offer includes Kindergarten, Primary School, Secondary School, SIS Bilingual College, and the International Baccalaureate Diploma Programme (IBDP). The SIS Basel educational concept includes continuity from Kindergarten to College and learning is enhanced by technology. The school emphasises bilingual education and international orientation as part of its approach.

Extra Curricular Facilities
Before- and after-school care is available to children in kindergarten and primary school from 7:30 a.m. to 8:30 a.m. (start of day) and 4 p.m. to 6 p.m., with supervision; this service is included in the school fees. Lunch is offered in the school cafeteria with supervision, served by the ZFV catering group; registration is via the ZFV platform. Clubs offer a range of extracurricular activities that can be booked for one semester. The holiday club runs during school breaks with week-long activities under supervision by an experienced team.
Extra-Curricular Activities

Academic & Intellectual
The school promotes learning beyond the classroom, with a strong emphasis on developing emotional and social skills alongside academics. Lunchtime, homework supervision, and before- and after-school care support students and provide a valuable complement to family life. A variety of clubs is available, offering activities that extend learning beyond regular classes and can be booked for a semester.

Cultural & Language
SIS Basel offers the SIS Student Exchange Programme, enabling upper-level students to study at another SIS school abroad. The programme fosters international-mindedness and intercultural understanding through study-abroad experiences. The SIS network connects schools across countries to help students become global citizens.

Social & Hobbies
The school offers a range of clubs for students of all ages, enabling development of skills that complement classroom work and provide variety from the regular program. Clubs can be booked for one semester, and costs are not included in school fees; details are available through the school office. During school holidays, a Holiday Club runs with week-long activities, sports, and trips under supervision.

Lifestyle & Wellbeing
All students can sign up for a hot lunch, eaten in the cafeteria under supervision; lunch registration is handled separately. Before- and after-school care is available for kindergarten and primary, with arrivals from 7:30 a.m. to 8:30 a.m. and after-school care from 4 p.m. to 6 p.m.; this service is included in school fees, while after-school clubs carry additional costs. The school also emphasizes spaces that invite learning and a culture of learning through its Student Life environment.
Languages

Language Provision
Multilingualism is an integral part of everyday life at SIS Basel. The school emphasizes a bilingual experience as part of its pedagogical approach. The Academic Offer includes Kindergarten, Primary School, Secondary School, SIS Bilingual College, and the International Baccalaureate Diploma Programme.

Bilingual Teaching
The school operates a bilingual day school from Kindergarten through to College. Since 1999, SIS Basel has been implementing the bilingual school concept. The SIS Educational Concept includes a Bilingual Experience.
Admissions

Admissions
1. Getting in Touch. Contact SIS Basel via the contact form, by email, or by phone. You are welcome to visit an Open House to gain an impression of everyday school life and meet the school leadership. We provide further information and discuss together what the next suitable step might be for you and your child. Open Houses offer an informal setting to ask questions and learn about SIS Basel. 20

2. Consultation. A personal consultation is arranged. During the consultation, we take the time to get to know you and answer questions while introducing you to our school and educational concept. If possible, a tour of the school building is provided to give a brief insight into classroom life; virtual, phone, or email consultations are also available. 20

3. Trial Days. If the consultation is positive for both sides, one or more trial days are arranged to experience everyday school life and assess comfort in the environment. Trial days are non-binding. If trial days are not possible, an alternative solution is discussed. 20

4. Registration. If you decide in favour of SIS after the consultations and trial days, you will be provided with the registration form digitally or in printed form. Complete the form in full and submit it to the SIS school of your choice. We are happy to support you if you have any questions. 20

5. School Contract – Welcome to SIS!. After the registration is received, the school contract is prepared and sent along with information about the enrolment fee. Once the contract is signed and the enrolment fee is received, your child is officially registered at SIS Switzerland and their place at the school is reserved. We look forward to accompanying your child on their educational journey.

Waitlist
Waiting lists are maintained if a year group or class is full. To secure a place for your child, enquire about capacity early, preferably in the spring.
School Events
The school has not added events
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