Calendar
Academic Year 2026 schedule
Key dates, activities and schedules throughout the academic year
Semester 118 May – 2 October 2026
Semester 226 October 2026 – 26 February 2027
The year at a glance
- 21OctResults announcedSchedule
- 21OctBoarders return to the dormitorySchedule
- 23OctHoliday: Chulalongkorn DayHoliday
- 26OctSemester 2 begins (Academic Year 2026)Schedule
- 30OctSports DayOpening and closing ceremoniesActivity
- 13NovFeast of Mother Mazzarello and Mother MoranoActivity
- 24NovLoy KrathongActivity
- 25NovKing Vajiravudh Memorial DayActivity
- 27NovField trip: Grades 1–3Activity
- 2DecScience Camp2–4 DecActivity
- 5DecKing Bhumibol's Birthday Anniversary · National Day · National Father's DayHoliday
- 7DecHoliday: National Father's Day (substitution)Holiday
- 10DecHoliday: Constitution DayHoliday
- 15DecChristmas Novena15–23 DecActivity
- 24DecChristmas celebrationActivity
- 25DecHoliday: Christmas DayHoliday
- 31DecHoliday: New Year's EveHoliday
- 1JanHoliday: New Year's DayHoliday
- 5JanMid-term exams, Semester 25–8 Jan · All levelsExam
- 15JanAcademic DaySchedule
- 16JanHoliday: Teachers' DayHoliday
- 22JanFeast of Blessed Laura VicuñaActivity
- 26JanTriduum for the Feast of Don Bosco26–28 JanActivity
- 29JanFeast of Don Bosco · Outstanding student awardsActivity
- 15FebFinal exams, Semester 2 (Grade 12)15–17 Feb · Grade 12Exam
- 18FebFarewell day for Grade 12Activity
- 23FebFinal exams, Semester 223–26 Feb · All levelsExam
- 11MarAnnual field trip11–13 MarActivity
- 6AprHoliday: Chakri Memorial DayHoliday
- 13AprHoliday: Songkran13–15 AprHoliday
* Based on the school's working calendar for Academic Year 2026 (B.E. 2569) · Dates may change by school announcement.