Switzerland, Basel
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· Reviewed by Giulia Ceccon · Chief Marketing Officer
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.
Erlenstrasse 15, 4058 Basel, Switzerland
SIS Swiss International School Basel has 500 pupils, typical class sizes of 15, instruction in German, English.
Basel, Switzerland
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.
Private bilingual day school
396 enrolled students; 40+ nationalities represented
Switzerland
Lunch, homework supervision, before- and after-school care, flexible drop-off and pickup times
Annual tuition at SIS Swiss International School Basel ranges from CHF 22,820 to CHF 34,020 for 2026/27.
SIS Swiss International School Basel teaches British Curriculum, Swiss Curriculum for students aged 3 to 18.
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.
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.
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.
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.
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.
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.