Katy Isd 2025-26 Calendar. Katy isd approves 2025 26 instructional calendarwednesday august 13 2025 first day of schoolfriday may 15 2026 last day of school for seniors principal:. S m t w th f s s m t w th f s s m t w th f s s m t w th f s august september october december january february april may june aug.
First day of school โข friday, may 16, 2025: Katy isd is requesting parent and staff.