William S. Hart High

William S Hart Union High School District

Newhall, California

2,034 students

High School, Grades 9–12

(661)259-7575

2,034

Students

22.6:1

S:T Ratio

School Snapshot

Key metrics at a glance

Avg SAT Score

1,200

A-

out of 1600

Good

Avg ACT Score

A-

out of 36

Good

AP Courses

courses offered

Excellent

AP Enrollment

33%

C+

of students

Good

Student-Teacher Ratio

23:1

C+

students per teacher

Below Avg

Graduation Rate

95%

A+

Excellent

This Week at William S. Hart High – July 26, 2026

273 students practicing on Varsity Tutors

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Academic Grades

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Academic Resources

Typical courses and practice resources for students at William S. Hart High

Biology

Cell biology, genetics, evolution, and ecology

AP Biology

College-level biology with lab component

Chemistry

Atomic structure, reactions, and stoichiometry

AP Chemistry

College-level chemistry with lab component

Physics

Mechanics, waves, electricity, and magnetism

AP Physics 1

Algebra-based mechanics and waves

Environmental Science

Ecosystems, human impact, and sustainability

AP Environmental Science

College-level environmental science

World History

Global civilizations from ancient to modern times

AP World History

College-level world history analysis

U.S. History

American history from colonization to present

AP U.S. History

College-level American history

Standardized Test Dates

Upcoming national, state, and school calendar dates that affect students at William S. Hart High.

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

+63 more national tests this school year

State Assessments

March 1, 2027 – June 30, 2027

CAASPP — Statewide Window

Testing window

School Milestones

October 1, 2026 – October 15, 2026

Private School Affidavit Filing Window

Other

See the full national test & school calendar

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School Details

Address

24825 N. Newhall Ave., Newhall, CA 91321

Phone

(661)259-7575

District

William S Hart Union High School District

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Other Schools in District

Golden Valley High

Arroyo Seco Junior High