- Enrollment
- 4,604
- Students per teacher
- 17.8:1
- Resource Index
- 38/100
Other / mixed grade configuration · Chicago, IL
Dett Elem School
Federal NCES profile for Dett Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 25/100.
2024-25 NCES dataOther / mixed grade configurationNCES 170993000695
👥 S:T ratio 46
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Dett Elem School earns 25/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #292 of 394
- schools in Chicago · Resource Index
- 25
- Resource Index · Lower
- 13.6:1
- students per teacher
- 326
- students enrolled
Dett Elem School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Dett Elem School ranks #292 of 394 schools in Chicago, IL.
School address
District: City of Chicago Sd 299 · Illinois
NCES ID 170993000695 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+32 students YoY
Dett Elem School grew from 253 students in 2022-23 to 285 in 2023-24 (+12.6%).
Teacher FTE added 24.0 → 26.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+32 students YoY 170993000695 · Chicago, IL Other · SMALL · TRAD
326 enr · 13.6:1 · RII 25
Nearest enrollment peer: Lane Technical High School (4,604 students)
Dett Elem School grew from 253 students in 2022-23 to 285 in 2023-24 (+12.6%). Teacher FTE added 24.0 → 26.0 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Dett Elem School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Lane Technical
Lane Technical High School
4,604 students
- Taft High Scho
Taft High School
4,487 students
- Curie Metropol
Curie Metropolitan High School
3,099 students
- Kenwood Academ
Kenwood Academy High School
2,268 students
- Young Magnet H
Young Magnet High School
2,223 students
- This school 326
Dett Elem School
326 students
What this shows Dett Elem School reports 326 students on the CCD universe file.
How Dett Elem School compares
Dett Elem School is a growing campus on CCD: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.6:1 | ▼ 3% | 14:1 | 15.7:1 |
| Enrollment | 326 | top 58% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.6:1
Leaner classes than 61% of US schools, a middle-of-the-pack class size.
326
Bigger than 36% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
13.6:1
students per teacher
- 3% below state mean
Top 51% in Illinois - lower ratio than 49% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
52.1%
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
$22,699
per pupil, district-wide
- above Illinois avg of $18,196
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
10
in-school suspensions + 26 out-of-school
Suspension rate: 3.1 per 100 students. Combined in-school and out-of-school rate: 11.0 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
African American 87.1%
Hispanic or Latino 8.0%
Two or More 4.3%
American Indian / Alaska Native 0.3%
Native Hawaiian / Pacific Islander 0.3%
Largest group: African American at 87.1% of enrollment.
Student-body diversity index 23.3/100
Simpson diversity index - at 23.3, Dett Elem School is less mixed than the Illinois school average of 38.9.
Programs
District finance for City of Chicago Sd 299 reports $22,699 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Dett Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lane Technical High School | Larger | No free-lunch data | Higher S:T ratio |
| Taft High School | Larger | No free-lunch data | Higher S:T ratio |
| Curie Metropolitan High School | Larger | No free-lunch data | Higher S:T ratio |
| Kenwood Academy High School | Larger | No free-lunch data | Higher S:T ratio |
| Young Magnet High School | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Dett Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 4,487
- Students per teacher
- 16.7:1
- Resource Index
- 41/100
- Enrollment
- 3,099
- Students per teacher
- 16.1:1
- Resource Index
- 32/100
- Enrollment
- 2,268
- Students per teacher
- 18.6:1
- Resource Index
- 34/100
- Enrollment
- 2,223
- Students per teacher
- 17.5:1
- Resource Index
- 52/100
Similar other schools in Chicago
6 comparable other schools (grades Mixed) serving the same city.
Lane Technical High School
Standard public school
4,604 students 17.8:1 students per teacher
Taft High School
Standard public school
4,487 students 16.7:1 students per teacher
Kenwood Academy High School
Standard public school
2,268 students 18.6:1 students per teacher
Young Magnet High School
Standard public school
2,223 students 17.5:1 students per teacher
Disney Elem Magnet School
Standard public school
1,384 students 15.2:1 students per teacher
Morgan Park High School
Standard public school
1,349 students 19:1 students per teacher
Nationwide other 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 (~326 students)
Frequently asked questions about Dett Elem School
How many students attend Dett Elem School?
Dett Elem School has 326 students enrolled. It is a public school in Chicago, IL. CCD year-over-year: 253 (2022-23) → 285 (2023-24), up 32.
What is the student-teacher ratio at Dett Elem School?
The student-teacher ratio at Dett Elem School is 13.6:1, which is 3% lower than the Illinois average of 14:1 and 13% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Dett Elem School?
The largest demographic group at Dett Elem School is African American at 87.1% of enrollment, in Chicago, IL.
What is the Resource Investment Index for Dett Elem School?
Dett Elem School has a Resource Investment Index of 25/100 (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 Dett Elem School rank among schools in Chicago?
By Resource Investment Index, Dett Elem School ranks #292 of 394 schools in Chicago, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Chicago on the city page.
What other schools are in City of Chicago Sd 299?
Besides Dett Elem School, City of Chicago Sd 299 also operates Lane Technical High School (4,604 students), Taft High School (4,487 students), and Curie Metropolitan High School (3,099 students). See the City of Chicago Sd 299 district page for the complete list.