Calendar

Date Range
-
Calendar RSS Feeds Subscribe to Calendar Alerts
May 2026
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Sunday, April 26
Monday, April 27
IB Exams
All Day
Tuesday, April 28
IB Exams
All Day
Wednesday, April 29
Day of Showa-School in Session
All Day
IB Exams
All Day
OIS/SIS MS/HS Class Visitation Day
All Day
SIS College Guidance Workshop for Parents 4:00 pm
All Day
Thursday, April 30
IB Exams
All Day
Friday, May 1
IB Exams
All Day
Saturday, May 2
IB Exams
All Day
SAT Test (OIS/SIS)
All Day
Sunday, May 3
Constitution Day
All Day
IB Exams
All Day
Monday, May 4
Greenery Day-No School
All Day
IB Exams
All Day
Tuesday, May 5
Children's Day-No School
All Day
IB Exams
All Day
Wednesday, May 6
IB Exams
All Day
Substitute Holiday-No School
All Day
Thursday, May 7
IB Exams
All Day
Friday, May 8
IB Exams
All Day
Saturday, May 9
IB Exams
All Day
Sunday, May 10
IB Exams
All Day
Monday, May 11
IB Exams
All Day
SIS G12 Course Registration for Fall
All Day
Tuesday, May 12
IB Exams
All Day
SIS G12 Course Registration for Fall
All Day
Wednesday, May 13
IB Exams
All Day
OIS PTA Monthly Meeting 9:00 am
All Day
SIS G11 Course Registration for Fall
All Day
Thursday, May 14
IB Exams
All Day
SIS G11 Course Registration for Fall
All Day
Friday, May 15
IB Exams
All Day
OIS G10 Field Study (KG Uegahara Campus)
All Day
SIS G10 Course Registration for Fall
All Day
SIS PA Annual General Meeting 10:30am
All Day
WJAA MS Boys Volleyball (SOIS) & Girls Softball (MBIS)
All Day
Saturday, May 16
IB Exams
All Day
SIS Open Day for new applicants
All Day
WJAA MS Boys Volleyball (SOIS) & Girls Softball (MBIS)
All Day
Sunday, May 17
IB Exams
All Day
Monday, May 18
IB Exams
All Day
SIS G10 Course Registration for Fall
All Day
Tuesday, May 19
IB Exams
All Day
Wednesday, May 20
IB Exams
All Day
SIS G12 Course Registration Changes
All Day
Thursday, May 21
Subscribe to Calendar Alerts [UN] World Day for Cultural Diversity for Dialogue and Development
All Day
Subscribe to Calendar Alerts IB Exams
All Day
Subscribe to Calendar Alerts SIS G12 Course Registration Changes
All Day
Friday, May 22
Subscribe to Calendar Alerts SIS G11 Course Registration Changes
All Day
Saturday, May 23
Subscribe to Calendar Alerts OIS ES Spring Concert
All Day
Subscribe to Calendar Alerts SOIS Festival
All Day
Sunday, May 24
Monday, May 25
Subscribe to Calendar Alerts OIS G5 & SIS G7 Music Course Explanation [LHR]
All Day
Subscribe to Calendar Alerts SIS G10 Course Registration for Fall
All Day
Tuesday, May 26
Subscribe to Calendar Alerts MS/HS Athletic Awards 4:00 pm
All Day
Subscribe to Calendar Alerts SIS G10 Course Registration Changes
All Day
Wednesday, May 27
Subscribe to Calendar Alerts OIS PYP Exhibition Opening Ceremony
All Day
Subscribe to Calendar Alerts SIS G10 Course Registration Changes
All Day
Subscribe to Calendar Alerts SIS Internal Recommendation Initial Application Period
All Day
Thursday, May 28
Subscribe to Calendar Alerts SIS Internal Recommendation Initial Application Period
All Day
Friday, May 29
Subscribe to Calendar Alerts OIS ES Student-Led Conferences-ES No Classes
All Day
Subscribe to Calendar Alerts SIS Internal Recommendation Initial Application Period
All Day
Saturday, May 30
Subscribe to Calendar Alerts OIS HS Graduation
All Day
Subscribe to Calendar Alerts SIS Internal Recommendation Initial Application Period
All Day
Sunday, May 31
Subscribe to Calendar Alerts SIS Internal Recommendation Initial Application Period
All Day
Monday, June 1
Subscribe to Calendar Alerts OIS/SIS MS Student Council Election
All Day
Subscribe to Calendar Alerts SIS G11 Career Studies [LHR]
All Day
Subscribe to Calendar Alerts SIS Internal Recommendation Initial Application Period
All Day
Tuesday, June 2
Subscribe to Calendar Alerts MS/HS Spring Bands Concert 4:00 pm
All Day
Subscribe to Calendar Alerts OIS G11 Exams
All Day
Subscribe to Calendar Alerts SIS Internal Recommendation Initial Application Period
All Day
Wednesday, June 3
Subscribe to Calendar Alerts MS/HS Spring Strings and Chorus Concert 4:00 pm
All Day
Subscribe to Calendar Alerts OIS G11 Exams
All Day
Thursday, June 4
Subscribe to Calendar Alerts OIS G11 Exams
All Day
Friday, June 5
Subscribe to Calendar Alerts [UN] World Environment Day
All Day
Subscribe to Calendar Alerts OIS G11 Exams
All Day
Saturday, June 6
Subscribe to Calendar Alerts OIS/SIS HS Student Council PROM
All Day
Subscribe to Calendar Alerts SAT Test (OIS/SIS)
All Day

School Calendar (PDF)

A PDF copy of our printed school calendar for the next academic year (2025-2026) can be downloaded here.

Special Events

More information about annual school events, such as the All School Production, the School Festival, the International Fair, and Sports Day, can be found below