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Illinois
DeKalb CUSD 428
DeKalb High School

DeKalb CUSD 428

DeKalb High School

Dekalb, Illinois

2,083 students

High School, Grades 9–12

(815)754-2100School Website

2,083

Students

16.8:1

S:T Ratio

School Snapshot
Key metrics at a glance
Avg SAT Score

964

B-

out of 1600
Average
Avg ACT Score

25

A-

out of 36
Good
AP Courses

15

A

courses offered
Excellent
AP Enrollment

17%

C

of students
Average
Student-Teacher Ratio

17:1

B

students per teacher
Average
This Week at DeKalb – June 18, 2026

272 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 DeKalb 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 DeKalb 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 DeKalb High School.

National Tests

June 20, 2026 – July 4, 2026

SAT Score Release Date

Score release

June 23, 2026

ACT

Score release

June 24, 2026

ACT

Late registration deadline

July 1, 2026 – July 31, 2026

AP Score Release — All

Score release

July 6, 2026

ACT Photo Upload/Standby Deadline

Photo upload deadline

July 11, 2026

ACT — National

Test date
+31 more national tests this school year
See the full national test & school calendar
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School Details
Address

501 W Dresser Rd, Dekalb, IL 60115

Phone

(815)754-2100

Website

Visit Website

District

DeKalb CUSD 428

Teachers & Staff
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Other Schools in District
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DeKalb Early Lrng and Dev Center
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Lincoln Elementary School
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