Jefferson High SchoolSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Jefferson High School.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
JAN
4
Winter Break
APR
2
Spring Break
MAY
23
Graduation - Jefferson High School
MAY
23
Graduation - Washington High School
MAY
27
Last Day
Calendar TipEarly dismissal days and parent-teacher conferences are often updated 2 weeks in advance. Check back regularly to stay ahead of the schedule!
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Jefferson High School.
National Tests
August 1, 2026 – November 30, 2026
ISEE — Fall Testing Season
Testing window
August 3, 2026 – June 30, 2027
SSAT — Flex Testing
Testing window
September 22, 2026
SAT — National
Late registration deadline
September 25, 2026
SAT — National
Score release
September 29, 2026
ACT — National
Late registration deadline
October 1, 2026 – October 30, 2026
PSAT 8/9 — Fall
Testing window