Mountlake Terrace High SchoolSchool Calendar

2026-27 Academic Calendar

Key dates, holidays, and events for Mountlake Terrace High School.

School at a Glance
Upcoming events & academic holidays
2026-27 Academic Year

NOV

11

No School
Veterans Day

NOV

25

No School
Thanksgiving Break

DEC

21

No School
Winter Break

JAN

18

No School
Martin Luther King Jr. Day

FEB

15

No School
Presidents' Day Break

APR

5

No School
Spring Break

MAY

28

Snow make-up day (if needed)

MAY

31

No School
Memorial Day

JUN

22

Last Day of School

JUN

23

Snow make-up day (if needed)
View Full 2026-27 Calendar
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 Mountlake Terrace 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
+66 more national tests this school year

State Assessments

January 25, 2027 – April 30, 2027

WA-AIM

Testing window
WA

January 25, 2027 – March 19, 2027

WIDA ACCESS

Testing window
WA

January 25, 2027 – March 19, 2027

WIDA Alternate ACCESS

Testing window
WA

March 1, 2027 – June 25, 2027

Smarter Balanced — Online

Testing window
WA

April 5, 2027 – May 14, 2027

Smarter Balanced — Paper/Pencil

Testing window
WA
See the full national test & school calendar