Events

December 2025
Gr. 7 Yokohama Field Trip

December 9, 2025 @ 9:00 am - 4:00 pm
Gr. 11 TOK Miraikan Visit

December 10, 2025 @ 9:30 am - 4:30 pm

Grade 11 TOK field trip to Miraikan, Odaiba. Independent student travel.
PTSA: Parents Soccer Saturday

December 13, 2025 @ 9:00 am - 11:00 pm
PTSA: Yoga Tuesday

December 16, 2025 @ 9:00 am - 10:00 am
PTSA: English Conversation Time

December 17, 2025 @ 9:00 am - 10:00 am

Boost your confidence and fluency as we chat about fun topics, play games and learn new expressions. Fee: 1000y en Sign up, see WhatsApp group
Studentainment

December 18, 2025 @ 2:00 pm - 4:00 pm
Winter Break

December 20, 2025 - January 11, 2026

Winter Break.
January 2026
YIS Field Hockey Invitational @ YIS

January 15 - January 18

First ever HS Field Hockey Tournament hosted by YIS .
Gr. 10 Design Fashion Parade

January 16 @ 8:00 am - 4:00 pm
PTSA: YIS Happy Choir

January 16 @ 9:30 am - 11:00 am
Yokohama Midorigaoka High School Exchange

January 16 @ 1:00 pm - 4:00 pm

Yokohama Midorigaoka High School Exchange at the Grade 10 Fashion Show.
PTSA: Parents Soccer Saturday

January 17 @ 10:00 am - 12:00 pm