2026-27 Academic Calendar
Key dates, holidays, and events for Horizon High School.
School at a Glance
Upcoming events & academic holidaysNOV
23
Thanksgiving Break
DEC
18
End of Second Marking Period
DEC
21
Winter Break
JAN
4
Teacher Workday/Student Holiday
JAN
5
Begin Third Marking Period / Begin Second Semester
JAN
18
Martin Luther King, Jr. Holiday - Schools and District Offices Closed
FEB
15
Presidents' Day/Teacher Non-Work Day - Schools Closed/District Offices Open
MAR
11
End of Third Marking Period
MAR
12
Teacher Workday/Student Holiday
MAR
15
Spring Break - Schools Closed/District Offices Open
MAR
22
Begin Fourth Marking Period
APR
23
Teacher Professional Day / Student Holiday/Teacher Non-Workday
MAY
26
End of Fourth Marking Period / Last Day of School
MAY
27
Post Planning
MAY
31
Memorial Day Holiday - Schools and District Offices Closed
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Horizon High School.
National Tests
August 1, 2026 – November 30, 2026
ISEE — Fall Testing Season
August 3, 2026 – June 30, 2027
SSAT — Flex Testing
October 1, 2026 – October 30, 2026
PSAT 8/9 — Fall
October 1, 2026 – October 30, 2026
PSAT/NMSQT — Fall
October 1, 2026 – October 30, 2026
SAT — School Day - Fall
October 16, 2026
SAT — National
State Assessments
November 30, 2026 – December 18, 2026
EOC — Winter Administration
November 30, 2026 – January 22, 2027
FAST — PM2 Grades K-10
March 29, 2027 – April 9, 2027
FAST — Writing Grades 4-10
May 3, 2027 – May 28, 2027
EOC — Spring Administration
May 3, 2027 – May 28, 2027
FAST — PM3 Grades 3-10
June 21, 2027 – June 25, 2027
EOC — Summer Administration Window 1