Thousand Islands High School Building
Welcome to Thousand Islands High School!

Upcoming Events

JAN
23

Earth Science Regents @ 8:00 am

8:00 AM - 12:00 PM

JAN
23

BES 2nd Quarter Awards Assembly

2:15 PM - 3:15 PM

JAN
24

HS Science Olympiad Competition @ Plattsburg HS

Start: Jan 24, 2026 8:00 AM End: Jan 25, 2026 5:00 PM

Multi-Day Event

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