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2026-2027 International Officially verified

St. Mary's International School

Tokyo, Japan · Asia/Tokyo

Term starts
24 Aug 2026
Term ends
11 Jun 2027
School closures
12
Longest break
19 days
No School - Christmas Holidays
Next closure at St. Mary's International School

No School - Parent Teacher Conference (Parents only)

Nov 3 – Nov 3, 2026

5
days away

The next date this school is closed to students, taken from its own published calendar. Public holidays are included; staff-only training days are not.

How St. Mary's International School differs from other schools in Tokyo

Compared against the median dates of the 10 schools we track in Tokyo. A school's own calendar can move a family's travel dates even when the city-wide dates look unchanged.

Break This school City median Difference
No School - Back to School Day (Parents only) 21 Sept – 21 Sept 12 Feb – 12 Feb starts 144 days earlier than the city median ends 144 days earlier than the city median
No School - Autumn Holidays 12 Oct – 16 Oct 12 Feb – 12 Feb starts 123 days earlier than the city median ends 119 days earlier than the city median
No School - Parent Teacher Conference (Parents only) 3 Nov – 3 Nov 12 Feb – 12 Feb starts 101 days earlier than the city median ends 101 days earlier than the city median
No School - Thanksgiving Holiday 27 Nov – 27 Nov 12 Feb – 12 Feb starts 77 days earlier than the city median ends 77 days earlier than the city median
No School - Student Led & Parent Teacher Conference 11 Feb – 11 Feb 12 Feb – 12 Feb starts 1 day earlier than the city median ends 1 day earlier than the city median
No School - Winter Holidays 22 Feb – 23 Feb 12 Feb – 12 Feb starts 10 days later than the city median ends 11 days later than the city median
No School - Spring Holidays 22 Mar – 26 Mar 22 Mar – 28 Mar ends 2 days earlier than the city median
No School - National Holiday 3 May – 3 May 23 Nov – 23 Nov starts 161 days later than the city median ends 161 days later than the city median
No School - Carnival Recovery Day 10 May – 10 May 12 Feb – 12 Feb starts 87 days later than the city median ends 87 days later than the city median
No School - for ES ONLY (MS/HS in session) 7 Jun – 7 Jun 12 Feb – 12 Feb starts 115 days later than the city median ends 115 days later than the city median
No School - for MS/HS ONLY (ES Sports Day) 9 Jun – 9 Jun 12 Feb – 12 Feb starts 117 days later than the city median ends 117 days later than the city median

School closures and holidays

Dates Days Event Type
18 Dec – 5 Jan 2027 19 No School - Christmas Holidays Winter break
22 Mar – 26 Mar 5 No School - Spring Holidays Spring break
21 Sept – 21 Sept 1 No School - Back to School Day (Parents only) Other school holiday
12 Oct – 16 Oct 5 No School - Autumn Holidays Other school holiday
3 Nov – 3 Nov 1 No School - Parent Teacher Conference (Parents only) Other school holiday
27 Nov – 27 Nov 1 No School - Thanksgiving Holiday Other school holiday
11 Feb – 11 Feb 1 No School - Student Led & Parent Teacher Conference Other school holiday
22 Feb – 23 Feb 2 No School - Winter Holidays Other school holiday
10 May – 10 May 1 No School - Carnival Recovery Day Other school holiday
7 Jun – 7 Jun 1 No School - for ES ONLY (MS/HS in session) Other school holiday
9 Jun – 9 Jun 1 No School - for MS/HS ONLY (ES Sports Day) Other school holiday
3 May – 3 May 1 No School - National Holiday Public holiday

Term dates

Every term start and end the school has published. The cards above show the year's first start and final end; a school with three terms has six boundaries in total.

  • 24 Aug 2026 First day for G3-12 Term starts
  • 25 Aug 2026 First day for RP-G2 Term starts
  • 11 Jun 2027 Last day of school, End of Q4/S2 (11:30 dismissal) Term ends

Staff training days (school closed to students)

These fall on days that are not public holidays — the school is shut but most workplaces are not.

  • 13 Aug 2026 New faculty report
  • 17 Aug 2026 All faculty report
  • 23 Nov 2026 No School - Professional Development Day
  • 11 Jan 2027 No School - Professional Development Day
  • 19 Feb 2027 No School - Professional Development Day

Other dates

  • 18 Aug The JAM Show
  • 23 Oct End of Q1
  • 13 Nov Fall Play
  • 20 Nov Bingo
  • 5 Dec ES Choral Christmas Concert
  • 6 Dec MS/HS Choral Christmas Concert (with Seisen)
  • 8 Dec St. Mary's Day Celebration
  • 9 Dec Winter Instrumental Concert
  • 10 Dec Jazz Nite
  • 22 Jan End of Q2/S1
  • 6 Feb Jazz Concert
  • 2 Apr End of Q3
  • 9 Apr Spring Musical
  • 23 Apr MS/HS Spring Choral Concert
  • 8 May Carnival
  • 21 May Spring Instrumental Concert
  • 27 May ES Spring Choral Concert
  • 29 May HS Graduation
  • 14 Jun Summer School begins
  • 2 Jul Summer School ends

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Source

https://www.smis.ac.jp/fs/resource-manager/view/cba260eb-5efe-4fb5-a3da-0264b6c9fa71

Data collected for this dataset. It is the date the whole dataset was collected, not a per-school verification date: the school may have published these dates earlier, and its calendar can change after it.

Dates are taken from the calendar published by the school or its authority. Always confirm against the school's own communication before booking travel — calendars change.

Report a date error or source change — this link carries the school and its source URL, so a correction arrives already attached to the right calendar. If the school has republished its calendar, send the new URL rather than an existing page.

Other schools in Tokyo

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