High school (grades 9-12) · Dekalb, IL

Dekalb High School

Federal NCES profile for Dekalb High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 20/100.

2024-25 NCES dataHigh school (grades 9-12)NCES 171200001449
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Compiled from official source data by .
0/100100/10020/100
👥 S:T ratio
31
🌟 Gifted program
30
📋 Attendance
0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →

The verdict

Dekalb High School earns 20/100 on the Resource Investment Index, with class sizes larger than 88% of Illinois schools. It is also one of the largest schools in Illinois.

#5 of 6
public schools in Dekalb · Resource Index
20
Resource Index · Lower
17.3:1
large classes for Illinois
2,134
students enrolled

Dekalb High School has class sizes larger than 88% of Illinois schools. Computed live against every Illinois school reporting to NCES.

By Resource Investment Index, Dekalb High School ranks #5 of 6 public schools in Dekalb, IL.

School address

Dekalb, IL 60115
District: Dekalb Cusd 428 · Illinois

NCES ID 171200001449 Verify on NCES CCD record →

NCES CCD universe card

School universe 171200001449 · Dekalb, IL High · LARGE · TRAD

2,134 enr · 17.3:1 · RII 20

Nearest enrollment peer: Huntley Middle School (865 students)

Resource Investment Index #5 of 6 public schools in Dekalb. NCES Common Core of Data stamps for this campus. Read with this school → · District book → · Illinois schools → · Find another →

Dekalb High School in the enrollment neighbourhood

Fall enrollment among this campus and nearest district peers

students

What this shows Dekalb High School reports 2,134 students on the CCD universe file.

Source U.S. Department of Education, NCES Common Core of Data (Public School Universe) As of 2024-25

How Dekalb High School compares

Dekalb High School on the metrics families compare, against Illinois and U.S. means.

Metric This school vs Illinois Illinois avg U.S. avg
Students per teacher 17.3:1 ▲ 24% 14:1 15.7:1
Enrollment 2,134 top 2% - -

Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25

17.3:1
Leaner classes than 29% of US schools, heavier class loads than most.
2,134
Bigger than 99% of US schools by enrollment, a large campus nationally.

Equity indicators (what these measure)

Staffing depth
17.3:1
students per teacher - 24% above state mean
Top 88% in Illinois - lower ratio than 12% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
46.4%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$18,665
per pupil, district-wide - above Illinois avg of $18,196
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
1,055
in-school suspensions + 1,055 out-of-school
Suspension rate: 49.4 per 100 students. Combined in-school and out-of-school rate: 98.9 per 100 students. Reported via the Civil Rights Data Collection. Includes 2111 expulsions.

Student demographics

Hispanic or Latino 34.6%
White 34.4%
African American 23.8%
Two or More 5.4%
Asian 1.3%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.1%

Largest group: Hispanic or Latino at 34.6% of enrollment.

Student-body diversity index 70.2/100

Simpson diversity index - at 70.2, Dekalb High School is more mixed than the Illinois school average of 38.9.

Programs

AP courses offered 15

Funding & spending

District-wide per-pupil expenditure for Dekalb Cusd 428, which includes Dekalb High School.

$18,665
Per student
+3%
vs Illinois
Avg $18,196
+6%
vs U.S.
Avg $17,658
Revenue mix
Local 41.5%
State 46.9%
Federal 11.6%

Source: NCES F-33 School District Finance Survey District-level finance · FY 2022-23 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.

How Dekalb High School Compares to District-Mates

School Enrollment Economic Profile Student-Teacher Ratio
Huntley Middle School Smaller No free-lunch data Lower S:T ratio
Clinton Rosette Middle School Smaller No free-lunch data Lower S:T ratio
Founders Elementary School Smaller No free-lunch data Lower S:T ratio
Cortland Elementary School Smaller No free-lunch data Lower S:T ratio
Littlejohn Elem School Smaller No free-lunch data Lower S:T ratio

Comparisons are relative to Dekalb High School's own figures; each column derives from NCES Common Core of Data.

Other Schools in This District

Dekalb Cusd 428 · 5 sibling schools

View district profile

Nationwide high schools with similar size or staffing

Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.

Similar enrollment (~2,134 students)

Similar student-teacher ratio (~17.3:1)

Frequently asked questions about Dekalb High School

How many students attend Dekalb High School?

Dekalb High School has 2,134 students enrolled. It is a high school in Dekalb, IL.

What is the student-teacher ratio at Dekalb High School?

The student-teacher ratio at Dekalb High School is 17.3:1, which is 24% higher than the Illinois average of 14:1 and 10% higher than the national average of 15.7:1.

What is the racial and ethnic makeup of Dekalb High School?

The largest demographic group at Dekalb High School is Hispanic or Latino at 34.6% of enrollment, in Dekalb, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 70.2/100.

What is the Resource Investment Index for Dekalb High School?

Dekalb High School has a Resource Investment Index of 20/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).

How does Dekalb High School rank among public schools in Dekalb?

By Resource Investment Index, Dekalb High School ranks #5 of 6 public schools in Dekalb, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Dekalb on the city page.

What other schools are in Dekalb Cusd 428?

Besides Dekalb High School, Dekalb Cusd 428 also operates Huntley Middle School (865 students), Clinton Rosette Middle School (575 students), and Founders Elementary School (565 students). See the Dekalb Cusd 428 district page for the complete list.

Read our methodology - how this data is sourced, computed, and verified.

Source: National Center for Education Statistics (NCES) CCD + Public School Universe (2024-25), CRDC (2021-22), F-33 District Finance Survey (FY 2022-23) · 2024-25 Data as of the 2024-25 school year. Coverage from U.S. Department of Education NCES Common Core of Data. Varies by entity type; administrative districts and certain charter networks may report only a subset of fields.

All federal data sources used on this page

Full source list and how we compute each figure: methodology page.

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Compiled from official source data by .

Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error. Data current as of August 2026.