International School of Ulaanbaatar

About ISU

ISU is a Pre-kindergarten to Grade 12 international school offering an inquiry-based, experiential learning environment based on the globally recognized International Baccalaureate programmes.

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Our Schedule & School Hours


Each school day in the academic year is numbered from “1” to “8”, with the first day of school, August 18th, being a “DAY 1”. For the subsequent 7 school days, there will be a different schedule each day. Students will need to know the day number in order to know which classes they attend that day. These day numbers will be obvious throughout the school and on the ISU website. You will notice on the ISU Community Calendar that when there are planned disruptions to the school calendar and no classes are being held on a particular day, that day is not numbered. The numbering sequence skips over that day and therefore classes are not lost. The numbering of the school days for 2020-21 has been set and will not be changed. If there are unplanned losses of school days, unfortunately the lost days cannot be rescheduled.

PreK to Grade 5 classrooms are open from 8:00am.

All students are expected to be in their classrooms before 8:00. Attendance is taken punctually at 8:00 a.m. Primary students arriving after 8:00 must sign in at Reception and are marked late.

*Co-curricular Activities are not offered on Fridays. Wednesdays are shortened days when faculty meetings take place (14:20 – 16:30), Wednesday CCAs are offered 14:15-15:00. Wednesday CCAs are offered by outside providers; Monday, Tuesday and Thursday CCAs are sponsored by ISU faculty.

You may download a daily schedule and annual calendar showing the 8-day rotation by clicking below...

Secondary School Daily Schedule
Primary School Daily Schedule
Annual Calendar                            



Four Seasons Garden
Khan-Uul District, 15 Khoroo
PO Box 36/10
Ulaanbaatar, Mongolia-17032
  • T: +976-70160010
  • T: +976-70160020
  • F: +976-70160012
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