Messalonskee High SchoolSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Messalonskee High School.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
AUG
18
PreK Open House
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 Messalonskee 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
September 14, 2026 – October 23, 2026
Maine Through Year Assessment — ELA and Math
Testing window
ME
January 4, 2027 – February 12, 2027
Maine Through Year Assessment — ELA and Math
Testing window
ME
April 1, 2027 – April 13, 2027
Maine Science Assessment
Testing window
ME
April 12, 2027 – May 28, 2027
Maine Through Year Assessment — ELA and Math
Testing window
ME