Middleburg High School

Clay County School District

Middleburg, Florida

1,852 students

High School, Grades 9–12

(904)336-8075 School Website

1,852

Students

18.8:1

S:T Ratio

School Snapshot

Key metrics at a glance

Avg ACT Score

B-

out of 36

Average

AP Courses

courses offered

Excellent

AP Enrollment

22%

of students

Good

Student-Teacher Ratio

19:1

B-

students per teacher

Average

This Week at Middleburg – August 17, 2026

239 students practicing on Varsity Tutors

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students

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ACT Prep

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MATH

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Academic Grades

Select a grade level to explore courses and resources

Academic Resources

Typical courses and practice resources for students at Middleburg High School

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 Middleburg High School.

National Tests

August 1, 2026 – November 30, 2026

ISEE — Fall Testing Season

Testing window

August 3, 2026 – June 30, 2027

SSAT — Flex Testing

Testing window

August 22, 2026

SAT — National

Test date

August 28, 2026

SAT — National

Registration deadline

September 1, 2026

ACT — National

Late registration deadline

September 1, 2026

SAT — National

Late registration deadline

+76 more national tests this school year

State Assessments

August 10, 2026 – September 25, 2026

FAST — PM1 Grades 3-10

Testing window

August 10, 2026 – September 25, 2026

FAST — PM1 Grades 3-10 ELA Reading

Testing window

September 8, 2026 – October 2, 2026

EOC — Fall Administration

Testing window

September 8, 2026 – October 2, 2026

FAST — Grade 10 ELA Reading Retake Fall

Testing window

September 8, 2026 – October 2, 2026

Florida EOC — Fall

Testing window

November 30, 2026 – December 18, 2026

EOC — Winter Administration

Testing window

+5 more state assessments this school year

See the full national test & school calendar

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School Details

Address

3750 County Road 220, Middleburg, FL 32068

Phone

(904)336-8075

Website

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District

Clay County School District

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Other Schools in District

Keystone Heights Junior/Senior High

Charles E. Bennett Elementary School

Lake Asbury Elementary School

Clay Charter Academy

R. C. Bannerman Learning Center

Florida Cyber Charter Academy at Clay