Chaska High SchoolSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Chaska High School.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
AUG
31
First Day of School (6-12)
OCT
15
MEA Break
OCT
19
Conferences / Teacher Workshop
OCT
29
End of 1st Quarter
OCT
30
Teacher Workshop
NOV
24
End of 1st Trimester
NOV
25
Thanksgiving Break
NOV
26
Thanksgiving Break
NOV
30
Conferences / Teacher Workshop
DEC
23
Winter Break
JAN
1
Winter Break
JAN
15
End of 2nd Quarter/1st Semester
JAN
18
Martin Luther King Jr. Day
JAN
19
Conferences / Teacher Workshop
FEB
15
President's Day
FEB
25
End of 2nd Trimester
FEB
26
Conferences / Teacher Workshop
MAR
19
End of 3rd Quarter
MAR
22
Spring Break
MAR
26
Spring Break
MAY
31
Memorial Day
JUN
4
Teacher Workshop (K-12)
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 Chaska 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
State Assessments
February 1, 2027 – March 26, 2027
WIDA ACCESS for ELLs
Testing window
MN
February 1, 2027 – March 26, 2027
WIDA Alternate ACCESS
Testing window
MN