Pattonville Sr. HighSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Pattonville Sr. High.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
AUG
20
Staff orientation/professional development
OCT
2
Early dismissal for staff collaboration (early childhood, K-5 and Remington)
NOV
25
No School
No school for Thanksgiving holiday (district closed)
NOV
26
No School
No school for Thanksgiving holiday (district closed)
DEC
24
No School
No school for winter break (district closed)
DEC
25
No School
No school for winter break (district closed)
JAN
1
No School
No school for winter break (district closed)
MAY
28
Report day for staff
JUN
1
Possible make-up day
JUN
2
Possible make-up day
JUN
7
Possible make-up 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 Pattonville Sr. High.
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
State Assessments
September 14, 2026 – December 18, 2026
MAP-Alternate Assessment — MAP-A
Testing window
MO
February 1, 2027 – May 21, 2027
MAP-Alternate Assessment — MAP-A
Testing window
MO