Stillwater High SchoolSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Stillwater High School.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
OCT
13
End of 1st Quarter
OCT
19
Start of 2nd Quarter
DEC
18
End of 2nd Quarter
JAN
5
Start of 3rd Quarter
MAR
11
End of 3rd Quarter
MAR
22
Start of 4th Quarter
MAY
19
Last Day of School
MAY
21
SHS/Lincoln Academy Graduation
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 Stillwater 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
August 22, 2026
SAT — National
Test date
August 28, 2026
SAT — National
Registration deadline
September 1, 2026
ACT — National
Late registration deadline
September 1, 2026
SAT — National
Late registration deadline