Calendar
2023 - 2024 Events
| SEPTEMBER 2023 | |
| Saturday, September 2 | IISJ College Fair |
| Monday, September 18 | School Closed/Respect for the Aged Day |
| OCTOBER 2023 | |
| Monday, October 9 | School Closed/Sports Day |
| October 10-20 | 2nd Term Exams Grades 1-12 |
| Thursday, October 12 | PTM Tokyo Kindergarten |
| Saturday, October 28 | PTM Tokyo Grades 1-5, 9-12 |
| Sunday, October 29 | PTM Yokohama Grades K-10 |
| NOVEMBER 2023 | |
| Friday, November 3 | PTM Tokyo Grades 1-5, 9-12 |
| Saturday, November 4, 11 | PTM Tokyo Grades 6-8 |
| Saturday, November 18 | Sports Day Tokyo Grades K-4 |
| Sunday, November 19 | Sports Day Tokyo Grades 5-12 |
| Thursday, November 23 | Sports Day Yokohama Grades K-10 |
| DECEMBER 2023 | |
| Saturday, December 9 | Winter Concert Tokyo |
| Sunday, December 10 | Winter Concert Tokyo |
| Saturday, December 16 | Winter Concert Yokohama |
| Monday, December 25 | Winter Vacation Starts |
| JANUARY 2024 | |
| Tuesday, January 9 | School Resumes |
| Friday, January 26 | School Closed/Republic Day |
| FEBRUARY 2024 | |
| Saturday, February 10 | PTM-on-Demand Tokyo |
| Sunday, February 11 | PTM-on-Demand Yokohama |
| Monday, February 12 | School Closed/Nat'l Foundation Day |
| Friday, February 23 | School Closed/Emperor's Birthday |
| MARCH 2024 | |
| Friday, March 1 | Pi Day (Observed) |
| March 11-22 | Final Exams Grades 1-9, 11 |
| Wednesday, March 20 | School Closed/Vernal Equinox |
| March 25-29 | Spring Break |
| Saturday, March 30 | Graduation Tokyo |
| Sunday, March 31 | Graduation Yokohama |
| APRIL 2024 | |
| Monday, April 1 | School Starts for Teachers |
