Mount Hebron High

Ellicott City, Maryland

1,621 students

High School, Grades 9–12

1,621

Students

15.2:1

S:T Ratio

School Snapshot
Key metrics at a glance
AP Courses

28

A+

courses offered
Excellent
AP Enrollment

45%

B-

of students
Excellent
Student-Teacher Ratio

15:1

B+

students per teacher
Good
Academic Grades

Select a grade level to explore courses and resources

Standardized Test Dates

Upcoming national, state, and school calendar dates that affect students at Mount Hebron High.

National Tests

March 30, 2026 – May 11, 2026

PSAT 10

Score release

March 30, 2026 – May 11, 2026

PSAT 8/9

Score release

April 21, 2026 – May 29, 2026

ACT — School Day - Late Spring Online

Score release

May 5, 2026 – May 19, 2026

ACT — School Day - Late Spring Paper

Score release

May 8, 2026

ACT

Registration deadline

May 8, 2026

AP Art and Design

Test date
+104 more national tests this school year

State Assessments

March 27, 2026 – May 29, 2026

Maryland Comprehensive Assessment Program

Testing window
MD

April 6, 2026 – May 29, 2026

MCAP — High School

Testing window
MD

School Milestones

May 15, 2026 – June 12, 2026

Graduation

Other
MD

May 21, 2026 – May 29, 2026

School End/Summer Start

Other

May 28, 2026

School End/Summer Start

Other

June 4, 2026

School End/Summer Start

Other

June 17, 2026

School End/Summer Start

Other
MD
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