Mason High SchoolSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Mason High School.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
AUG
19
New Teachers Start
NOV
17
Evening Parent-Teacher Conferences
NOV
19
Afternoon & Evening Parent-Teacher Conferences
MAR
11
Afternoon & Evening Parent-Teacher Conferences
Partner 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 Mason High School.
National Tests
August 7, 2026
SAT — National
Registration deadline
August 11, 2026
SAT — National
Late registration deadline
August 14, 2026
ACT — National
Registration deadline
August 22, 2026
SAT — National
Test date
August 28, 2026
SAT — National
Registration deadline
September 1, 2026
ACT — National
Late registration deadline
State Assessments
January 25, 2027 – March 26, 2027
WIDA ACCESS
Testing window
MI
January 25, 2027 – March 26, 2027
WIDA Alternate ACCESS
Testing window
MI
April 5, 2027 – May 14, 2027
M-STEP — Grade 11 - Science and Social Studies (MME)
Testing window
MI
April 5, 2027 – April 30, 2027
M-STEP — Paper/Pencil
Testing window
MI
April 5, 2027 – May 21, 2027
MI-Access Alternate Assessment
Testing window
MI
April 5, 2027 – April 30, 2027
Michigan Merit Exam (MME) — SAT with Essay
Testing window
MI