The list of thematic weeks (optional breaks): Ecological week — 10 October 2022 to 14 October 2022 Christmas week — 19 December 2022 to 23 December 2022 Science week — 27 February 2023 to 3 March 2023 Book week — 1 May 2023 to 5 May 2023 Art week — 3 July 2023 to 7 July 2023
The list of breaks: 17 October 2022 to 21 October 2022 26 December 2022 to 30 December 2023 6 March 2023 to 10 March 2023 8 May 2023 to 12 May 2023 10 July 2023 to 14 July 2023 14 August 2023 to 18 August 2023
School events and activities:
Theater visit – twice a year (October 12 and March 1)
Spelling and Phonetics Contest in English – once a year (May 3)
Mental Math Championship – twice a year (October 11 and July 3)
Classic Poetry Reading Contest – once a year (May 4)
Sports Competition – 4 times a year (October 13, December 23, February 28, July 4)
Readers' Conference – presentation of your favourite book — once a year (May 5)
TISA Business Conference — school project presentation – twice a year (December 14 and May 24)
Musical/Play — twice a year (December 20 and June 10)
Chess Championship – twice a year (March 2 and July 5)
Paintings/clay Exhibition – twice a year (October 14 and May 2)
Robotics Competition – twice a year (December 7 and June 21)
Demonstration performances in choreography – twice a year (November 23 and May 31)
Music Concert – once a year (June 14)
Field Trip – once a year (July 6)
TISA Tulip Ball – once a year (March 25)
The list of holidays in 2022-2023 school year (no school): Leiden Ontzet — 3 October 2022 Christmas Day — 25-26 December 2022 Easter Monday — 10 April 2022 King’s Day — 27 April 2023 Ascension Day — 18 May 2023 Whit Monday — 29 May 2023
School Open Days (2022-2023): November 2 January 20 February 17 March 31 May 2 June 30
Parent Teacher Student Conferences: Report Card Conference – twice a year (January 24 and June 27)