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Clay County School District
Keystone Heights Junior/Senior High

Clay County School District

Keystone Heights Junior/Senior High

Keystone Heights, Florida

1,205 students

High School, Grades 7–12

(904)336-7775School Website

#146

Best Student:Teacher Ratio in Florida

1,205

Students

17.7:1

S:T Ratio

School Snapshot
Key metrics at a glance
AP Courses

5

B

courses offered
Average
AP Enrollment

8%

C

of students
Below Avg
Student-Teacher Ratio

18:1

B

students per teacher
Average
This Week at Keystone Heights Junior/Senior High – August 18, 2026

158 students practicing on Varsity Tutors

SAT Prep

1

A

B

C

D

2

A

B

C

D

3

A

B

C

D

4

A

B

C

D

5

A

B

C

D

1520

0

students

Start practicing →
ACT Prep

36

ENG

MATH

READ

SCI

0

students

Start practicing →
Math

0

students

Start practicing →
English

0

students

Start practicing →
Science

0

students

Start practicing →
Explore practice resources for Keystone Heights Junior/Senior High students
Academic Grades

Select a grade level to explore courses and resources

7
Grade
8
Grade
9
Grade
10
Grade
11
Grade
12
Grade
Academic Resources

Typical courses and practice resources for students at Keystone Heights Junior/Senior High

Biology
9

Cell biology, genetics, evolution, and ecology

AP Biology
AP

College-level biology with lab component

Chemistry
9

Atomic structure, reactions, and stoichiometry

AP Chemistry
AP

College-level chemistry with lab component

Physics
9

Mechanics, waves, electricity, and magnetism

AP Physics 1
AP

Algebra-based mechanics and waves

Environmental Science
9

Ecosystems, human impact, and sustainability

AP Environmental Science
AP

College-level environmental science

World History
9

Global civilizations from ancient to modern times

AP World History
AP

College-level world history analysis

U.S. History
9

American history from colonization to present

AP U.S. History
AP

College-level American history

Standardized Test Dates

Upcoming national, state, and school calendar dates that affect students at Keystone Heights Junior/Senior High.

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
FL

August 10, 2026 – September 25, 2026

FAST — PM1 Grades 3-10 ELA Reading

Testing window
FL

September 8, 2026 – October 2, 2026

EOC — Fall Administration

Testing window
FL

September 8, 2026 – October 2, 2026

FAST — Grade 10 ELA Reading Retake Fall

Testing window
FL

September 8, 2026 – October 2, 2026

Florida EOC — Fall

Testing window
FL

November 30, 2026 – December 18, 2026

EOC — Winter Administration

Testing window
FL
+5 more state assessments this school year
See the full national test & school calendar
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School Details
Address

900 Orchid Ave, Keystone Heights, FL 32656

Phone

(904)336-7775

Website

Visit Website

District

Clay County School District

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Other Schools in District
Keystone Heights Junior/Senior High
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Clay Charter Academy
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Florida Cyber Charter Academy at Clay