International School Basel

Discover
ISB is the only not-for-profit, English language, three programme International Baccalaureate (IB) World School in the region providing students aged 3-18 with the education, support and inspiration they need to become global citizens.
Learn
ISB is an International Baccalaureate (IB) World School. Studied by over one million students in 148 countries, the IB prepares students with the intellectual, personal, emotional and social skills needed to live, learn and work in a rapidly globalising world
Experience
Sports, drama, music, art, debate, representation, recreation – at ISB, there are numerous ways for students of all ages to cooperate and compete to improve existing skills or try something new.
Join
ISB has many years’ experience supporting students and families from all over the world. We accept students throughout the school year, dependent on availability of space and fulfillment of entry requirements.
Connect
Once a Dragon, always a Dragon! Whether you are a graduate, former student, parent, or employee, you will always remain a member of the ever expanding ISB Community.

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Academic Calendar

AcademicCalendar

school key dates and Holidays

2024/25 Holidays
2024/25 Key Dates

2024/25 Holidays

Scheduled Holidays for 2024/25

14 August	First day of school
30 September – 11 October	Autumn Break
16 December – 5 January	Winter Break
10 – 14 March	Fasnacht Break
17 – 25 April	Spring Break
19 June	Last day of school

2024/25 Key Dates

Key Dates for 2024/25

2 – 6 August	New Staff in-service
7 – 13 August	All Staff in-service
12 August	New Family Welcome
13 August	Campus Orientation
14 August	First day of school
23 September	All Staff in-service
30 September – 11 October	Autumn Break
13 December	Students finish at 12:00 Staff finish at 13:00
16 December – 5 January	Winter Break
10 – 14 March	Fasnacht Break
21 March	All Staff in-service
17 – 25 April	Spring Break
1 May	Public Holiday
19 May	All Staff in-service
29 – 30 May	Public Holiday + Bridge Day
7 June	Graduation Day
9 June	Public Holiday
19 June	Students finish at 12:00 Staff in-service from 12:00
20 June	Staff in-service

Accurate as of June 2024.

2025/26 Holidays
2025/26 Key Dates

2025/26 Holidays

Scheduled Holidays for 2025/26

13 August	First day of school
6 – 17 October	Autumn Break
15 December – 2 January	Winter Break
23 – 27 February	Fasnacht Break
2 – 10 April	Spring Break
18 June	Last day of school

2025/26 Key Dates

Key Dates for 2025/26

4 – 5 August	New Staff in-service
6 – 12 August	All Staff in-service
11 August	New Family Welcome
12 August	Campus Orientation
13 August	First day of school
6 – 17 October	Autumn Break
12 December	Students finish at 12:00 Staff finish at 13:00
15 December – 2 January	Winter Break
23 – 27 February	Fasnacht Break
2 – 10 April	Spring Break
1 May	Public Holiday
14 – 15 May	Public Holiday + Bridge Day
25 May	Public Holiday
18 June	Students finish at 12:00 Staff in-service from 12:00
19 June	Staff in-service

Accurate as of June 2024.

ISB reserves the right to update or change dates according to circumstances.
ISB Community members can login to the Communication Portal to view the full All School Calendar.