Charles J. Colgan Sr. High

Manassas, Virginia

2,907 students

High School, Grades 9–12

2,907

Students

18.2:1

S:T Ratio

School Snapshot
Key metrics at a glance
AP Courses

29

A+

courses offered
Excellent
AP Enrollment

10%

C

of students
Average
Student-Teacher Ratio

18:1

B-

students per teacher
Average
Academic Grades

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Academic Pathways

Explore 221 courses in the 2025-26 catalog for Charles J. Colgan Sr. High

Standardized Test Dates

Upcoming national, state, and school calendar dates that affect students at Charles J. Colgan Sr. High.

National Tests

June 20, 2026 – July 4, 2026

SAT Score Release Date

Score release

June 23, 2026

ACT

Score release

June 24, 2026

ACT

Late registration deadline

July 1, 2026 – July 31, 2026

AP Score Release — All

Score release

July 6, 2026

ACT Photo Upload/Standby Deadline

Photo upload deadline

July 11, 2026

ACT — National

Test date
+31 more national tests this school year

State Assessments

February 23, 2026 – June 18, 2026

Virginia Alternate Assessment Program — VAAP

Testing window
VA

March 2, 2026 – June 18, 2026

SOL End-of-Course

Testing window
VA

March 9, 2026 – June 18, 2026

Virginia Standards of Learning — SOL

Testing window
VA
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