Calendar
2024 - 2025 Events
| APRIL 2024 | |
| Monday, April 1 | New School Year Starts for Teachers |
| Tuesday, April 2 | New School Year Starts for Students |
| Monday, April 29 | School Closed/Showa Day |
| MAY 2024 | |
| May 3-6 | School Closed/Golden Week |
| Saturday, May 18 | Sports Day Tokyo |
| Sunday, May 19 | Sports Day Tokyo |
| Saturday, May 25 | Sports Day Yokohama |
| JUNE 2024 | |
| June 17-24 | 1st Term Exams Grades 1-12 |
| Wednesday, June 19 | Kindergarten Open Houses |
| JULY 2024 | |
| Monday, July 8 | Summer Vacation Starts |
| Monday, July 8 | Summer School Starts |
| AUGUST 2024 | |
| Friday, August 2 | Summer School Ends |
| Monday, August 19 | School Resumes |
| Saturday, August 31 | IISJ College Fair |
| SEPTEMBER 2024 | |
| Monday, September 16 | School Closed/Respect for the Aged Day |
| Monday, September 23 | School Closed/Autumnal Equinox |
| OCTOBER 2024 | |
| Monday, October 14 | School Closed/Nat'l Sports Day |
| October 15-25 | 2nd Term Exams Grades 1-12 |
| Wednesday, October 16 | PTM Kindergarten |
| Thursday, October 24 | Kindergarten Expo |
| NOVEMBER 2024 | |
| Saturday, November 2 | PTM Tokyo Grades 1-5 |
| Sunday, November 3 | PTM Tokyo Grades 1-5, 10-12 |
| Monday, November 4 | PTM Yokohama Grades 1-11 |
| Monday, November 4 | School Closed/Culture Day |
| Saturday, November 9 | PTM Tokyo Grades 6-9 |
| Sunday, November 10 | PTM Tokyo Grades 6-9 |
| DECEMBER 2024 | |
| Saturday, December 7 | Winter Concert Tokyo |
| Sunday, December 8 | Winter Concert Tokyo |
| Saturday, December 14 | Winter Concert Yokohama Grades K-10 |
| Monday, December 23 | Winter Vacation Begins |
| JANUARY 2025 | |
| Monday, January 6 | School Resumes |
| Monday, January 13 | School Closed/Coming of Age Day |
| Tuesday, January 14 | Science Fair Grades 1-5 |
| Wednesday, January 15 | Science Fair Grades 6/7 |
| Thursday, January 16 | Science Fair Grades 8, 9, and 11 |
| FEBRUARY 2025 | |
| Tuesday, February 11 | School Closed/Nat'l Foundation Day |
| Tuesday, February 11 | PTM-on-Demand Tokyo KG, 1-12 |
| Monday, February 24 | School Closed/Emperor's Birthday |
| MARCH 2025 | |
| Tuesday, March 4 | Pi Day (Observed) |
| March 12-24 | Final Exams Grades 9/11 |
| March 14-24 | Final Exams Grades 1-8 |
| Thursday, March 20 | School Closed/Vernal Equinox |
| March 25-28 | Spring Break |
| Saturday, March 29 | Graduation Tokyo Grades 10/12 |
| Sunday, March 30 | Graduation Grades KG, 5, and 8 |
