Horizon High SchoolSchool Calendar
2025-26 Academic Calendar
Key dates, holidays, and events for Horizon High School.
School at a Glance
Upcoming events & academic holidays2025-26 Academic Year
05/
BEST Algebra 1
05/
BEST Geometry
05/
AP Literature
05/
AP Comparative Government
05/
AP Physics 1
05/
AP Statistics
05/
AICE Portuguese Language
05/
AICE Portuguese
05/
AICE History
05/
AP Macroeconomics
05/
AICE English Language
05/
AICE Spanish Language
05/
AICE Spanish Literature/Language
05/
AP Calculus AB/BC
05/
AP Seminar
05/
CFEs - Day 1
05/
AICE Literature in English
05/
AICE Spanish Language
05/
AICE Spanish Literature/Language
05/
School Board Meeting
05/
AP Pre-Calculus
05/
CFEs - Day 2
05/
AICE Psychology
05/
Last Day for Seniors
05/
AP Art History
05/
AP Computer Science Principles
05/
AP Physics Electricity & Magnetism
05/
AP Physics Mechanics
05/
Biology + US History EOC
05/
AICE Psychology
05/
AP Computer Science A
05/
CFEs - Day 3
05/
AP Late Testing: Comparative Government and Politics
05/
AP Late Testing: European History
05/
AP Late Testing: World History: Modern
05/
AP Late Testing: English Literature and Composition
05/
AP Late Testing: Human Geography
05/
AP Late Testing: Latin
05/
AP Late Testing: Japanese Language and Culture
05/
AP Late Testing: United States Government and Politics
05/
AP Late Testing: African American Studies
05/
AP Late Testing: United States History
05/
AICE English Language
05/
Student Early Dismissal & End of School Year (Last Day of School)
05/
AP Late Testing: Microeconomics
05/
AP Late Testing: Seminar
05/
AP Late Testing: Statistics
05/
AP Late Testing: Biology
05/
AP Late Testing: Chemistry
05/
AP Late Testing: French Language and Culture
05/
AP Late Testing: Macroeconomics
05/
No School
No School for Students - Teacher Work Day
05/
AP Late Testing: Chinese Language and Culture
05/
AP Late Testing: Computer Science Principles
05/
AP Late Testing: English Language and Composition
05/
AP Late Testing: Music Theory
05/
AP Late Testing: Precalculus
05/
AP Late Testing: Art History
05/
AP Late Testing: Calculus AB
05/
AP Late Testing: Calculus BC
05/
AP Late Testing: Italian Language and Culture
05/
AP Late Testing: Physics 2: Algebra-Based
05/
AP Late Testing: Physics C: Mechanics
05/
Last Day of CFEs
05/
AP Late Testing: Environmental Science
05/
AP Late Testing: Physics 1: Algebra-Based
05/
AP Late Testing: Spanish Language and Culture
05/
AP Late Testing: Spanish Literature and Culture
05/
AP Late Testing: Computer Science A
05/
AP Late Testing: German Language and Culture
05/
AP Late Testing: Physics C: Electricity and Magnetism
05/
AP Late Testing: Psychology
05/
No School
Memorial Day Holiday (Schools and District Offices Closed)
05/
Last Day of School/ End of Fourth Marking Period
05/
Post Planning
05/
Horizon HS Graduation
05/
Post Planning
06/
AICE Portuguese
Partner TipEarly dismissal days and parent-teacher conferences are often updated 2 weeks in advance. Check back regularly to stay ahead of the schedule!