Holiday calendar
| 2025-2026 | (dates are inclusive) |
| 1st day of new school year 2025-26 | 1 Sept 2025 |
| Leiden 3 October festival – Lesson-free day | 3 Oct 2025 |
| Autumn Holiday | 20 Oct – 24 Oct 2025 |
| Christmas Holiday | 22 Dec 2025 – 2 Jan 2026 |
| Spring Holiday | 16 Feb – 20 Feb 2026 |
| Easter Monday | 6 Apr 2026 |
| May Holiday *(excluding DP2 & MP5 if exams take place during this period)* | 20 Apr – 1 May 2026 |
| Ascension Day | 14 May 2026 |
| Whitsun/Pentecost | 25 May 2026 |
| Summer Holiday | 20 Jul – 30 Aug 2026 |
| 2026-2027 | (dates are inclusive) |
| Lesson free day | 15 Sep 2026 |
| Autumn Holiday | 19 Oct – 23 Oct 2026 |
| Christmas Holiday | 21 Dec 2026 –01 Jan 2027 |
| Lesson free day | 15 Feb 2027 |
| Spring Holiday | 19 Feb – 26 Feb 2027 |
| Good Friday | 26 Mar 2027 |
| Easter Monday | 29 Mar 2027 |
| May Holiday *(excluding DP2 & MP5 if exams take place during this period)* | 26 Apr – 7 May 2027 |
| Ascension Day | 17 May 2027 |
| Summer Holiday | 19 Jul – 27 Aug 2027 |