Academic Year 2025-2026 · Base International School
School calendar
2025–2026.
Back to school, holidays, celebrations and everything in between. All the dates that shape the academic year, in one place so your family can plan ahead.
1st Term
Sep · Oct · Nov · Dec
2nd Term
Jan · Feb · Mar
3rd Term
Apr · May · Jun
Academic Year 2025-2026 · Base International School
School calendar 2025–2026.
Back to school, holidays, celebrations and everything in between. All the dates that shape the academic year, in one place so your family can plan ahead.
The three terms
How the academic year
is organised.
1st Term
From back to school
to Christmas
to Christmas
8 Sep – 19 Dec
Includes the public holidays of 12 October (National Day), 1 November (All Saints), 10 November (Almudena, Madrid's patron saint) and 6 December (Constitution Day).
2nd Term
From the return after Christmas
to Easter
to Easter
8 Jan – 26 Mar
The longest term in school days. Includes 2 May as a Madrid regional holiday, although it falls within the third term.
3rd Term
From after Easter
to end of year
to end of year
7 Apr – 23 Jun
Includes the holidays of San Isidro (15 May), 1 May (Labour Day) and the Comunidad de Madrid regional day (2 May).
Key dates
The dates that set
the rhythm of the year.
Start of year
First day of school
8 Sep 2025
The 2025-2026 academic year begins for Preschool, Primary, Secondary and Bachillerato.
Family meetings
Start-of-year meetings
9 Sep – 19 Sep 2025
A chance to meet your child's tutor and the teaching team, and hear about the plan for the year. Preschool, Primary and Secondary meetings are spread across the first two weeks; your tutor will confirm the exact date.
Holidays
Christmas holidays
22 Dec 2025 – 7 Jan 2026
Two and a half weeks of break between the first and second terms.
Madrid holiday
Ntra. Sra. de la Almudena
10 Nov 2025
Patron saint of Madrid. No school.
Holidays
Easter break
27 Mar – 6 Apr 2026
Break between the second and third terms, as set by the Comunidad de Madrid school calendar.
Regional holiday
Comunidad de Madrid Day
2 May 2026
Regional public holiday. No school across the Comunidad de Madrid.
Madrid holiday
San Isidro
15 May 2026
Patron saint of the city of Madrid. No school.
End of year
Last day of school
23 Jun 2026
Official end of the 2025-2026 academic year for Preschool, Primary and Secondary.
Good to know
Details that make
your school day easier.
Unified timetable
All stages start at 9:00
From 2025-26, every stage starts at the same time: Preschool, Primary, Secondary and Bachillerato. Pick-up times are staggered by stage.
Before & after school
Free extended hours
Drop-off from 7:30 and pick-up until 18:30, at no extra cost for all stages.
Bachillerato
Daily finish at 14:30
Afternoons are free for independent study and personal work, with an optional lunch service. Students on the Diploma Programme have afternoon classes two days a week.
Admissions open · 2026-2027
Discovering Base for the first time?
Come and see the school.
If you are exploring whether Base is the right fit for your family, there are two easy ways to take the next step: come along to our next Open Day, or drop us a line and we will be happy to answer every question.