ISE · SCHOOL YEAR 2026–2027
School
Calendar
ACADEMIC CALENDAR
Our year at a glance
Browse key dates for the 2026–2027 school year. For the full day-by-day schedule, download the official ISE calendar.
Semester 1
August – December 2026
13
August 2026
SCHOOL DAY
First day of school
12–19
October 2026
SCHOOL BREAK
ISE Fall Break
19
October 2026
STAFF DEVELOPMENT
Faculty in-service day · no students
7
December 2026
HOLIDAY
Father’s Day substitution holiday
18
December 2026
SCHOOL DAY
Last day of Semester 1
21
December 2026 – 8 January 2027
SCHOOL BREAK
Winter Break
Semester 2
January – June 2027
11
January 2027
STAFF DEVELOPMENT
Faculty in-service day · no students
12
January 2027
SCHOOL DAY
First day of Semester 2
8–12
February 2027
SCHOOL BREAK
ISE Break
12–20
April 2027
SCHOOL BREAK
Songkran Break
20
April 2027
STAFF DEVELOPMENT
Faculty in-service day · no students
11
June 2027
SCHOOL DAY