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Naperville CUSD 203
Naperville Central High School

Naperville CUSD 203

Naperville Central High School

Naperville, Illinois

2,551 students

High School, Grades 9–12

(630)420-6422School Website

#29

Best ACT in Illinois High Schools

2,551

Students

14.4:1

S:T Ratio

School Snapshot
Key metrics at a glance
Avg SAT Score

1,300

A

out of 1600
Excellent
Avg ACT Score

28

A

out of 36
Excellent
AP Courses

30

A+

courses offered
Excellent
AP Enrollment

36%

C+

of students
Excellent
Student-Teacher Ratio

14:1

B+

students per teacher
Good
This Week at Naperville Central – August 18, 2026

338 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

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Explore practice resources for Naperville Central students
Academic Grades

Select a grade level to explore courses and resources

9
Grade
10
Grade
11
Grade
12
Grade
Academic Resources

Typical courses and practice resources for students at Naperville Central High School

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 Naperville Central 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
See the full national test & school calendar
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School Details
Address

440 Aurora Ave, Naperville, IL 60540

Phone

(630)420-6422

Website

Visit Website

District

Naperville CUSD 203

Teachers & Staff
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