Enrollment
227
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Dolton, IL
Diekman Elem School
Federal NCES profile for Diekman Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 27/100.
2024-25 NCES dataOther / mixed grade configurationNCES 171242001490
👥 S:T ratio 50
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Diekman Elem School earns 27/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #5 of 9
- public schools in Dolton · Resource Index
- 27
- Resource Index · Lower
- 12.6:1
- students per teacher
- 227
- students enrolled
Diekman Elem School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Diekman Elem School ranks #5 of 9 public schools in Dolton, IL.
School address
District: Dolton Sd 149 · Illinois
NCES ID 171242001490 Verify on NCES CCD record →
Teachers (FTE)
18.0
Federal CCD staff survey
Students per teacher
12.6:1
vs 14:1 Illinois avg
-10% vs state
Student-teacher ratio in context
How Diekman Elem School compares with Illinois and U.S. medians
What stands out at Diekman Elem School
Diekman Elem School is a mid-sized combined-grade school in Dolton, Illinois, enrolling 227 students.
Class sizes run a bit leaner than typical: 12.6:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
Enrollment of 227 puts it in the smaller third of Illinois schools by headcount.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is predominantly African American (92% of enrollment) (diversity index 15/100).
Chronic absenteeism is elevated: 41.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Dolton's public schools, it stands alongside Early Childhood Cntr (196 students): Diekman Elem School is larger than that campus by headcount and runs leaner classes (12.6:1 vs 14:1).
Dolton Sd 149 also operates Caroline Sibley Elem School (434 students) and New Beginnings Learning Academy (288 students) alongside Diekman Elem School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Diekman Elem School compares
Diekman Elem 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 | 12.6:1 | ▼ 10% | 14:1 | 15.7:1 |
| Enrollment | 227 | top 78% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.6:1
Leaner classes than 70% of US schools, among the more generously staffed nationally.
227
Bigger than 23% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
12.6:1
students per teacher
- 10% below state mean
Top 37% in Illinois - lower ratio than 63% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
41.0%
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
$17,572
per pupil, district-wide
- above Illinois avg of $17,042
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
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
African American 92.1%
Hispanic or Latino 6.6%
Two or More 0.9%
American Indian / Alaska Native 0.4%
Largest group: African American at 92.1% of enrollment.
Student-body diversity index 14.7/100
Simpson diversity index - at 14.7, Diekman Elem School is less mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Dolton Sd 149, which includes Diekman Elem School.
$17,572
Per student
+3%
vs Illinois
Avg $17,042
+6%
vs U.S.
Avg $16,593
Revenue mix
Local 30.0%
State 59.4%
Federal 10.6%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Diekman Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Caroline Sibley Elem School | Larger | No free-lunch data | Higher S:T ratio |
| New Beginnings Learning Academy | Larger | No free-lunch data | Higher S:T ratio |
| Berger-Vandenberg Elem School | Similar size | No free-lunch data | Higher S:T ratio |
| Carol Moseley Braun School | Similar size | No free-lunch data | Higher S:T ratio |
| Creative Communications Acad | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Diekman Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 434
- Students per teacher
- 22.8:1
- Resource Index
- 13/100
- Enrollment
- 288
- Students per teacher
- 16:1
- Resource Index
- 22/100
- Enrollment
- 266
- Students per teacher
- 15.6:1
- Resource Index
- 23/100
- Enrollment
- 264
- Students per teacher
- 17.6:1
- Resource Index
- 31/100
- Enrollment
- 246
- Students per teacher
- 30.8:1
- Resource Index
- 44/100
Similar other schools in Dolton
1 comparable other schools (grades Mixed) serving the same city.
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Illinois, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~227 students)
Similar student-teacher ratio (~12.6:1)
Next steps
Verify locally before acting on Diekman Elem School's federal record.
- Compare Diekman Elem School against another school. Compare schools
- Dolton Sd 149's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Diekman Elem School
How many students attend Diekman Elem School?
Diekman Elem School has 227 students enrolled. It is a public school in Dolton, IL.
What is the student-teacher ratio at Diekman Elem School?
The student-teacher ratio at Diekman Elem School is 12.6:1, which is 10% lower than the Illinois average of 14:1 and 20% 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 Diekman Elem School?
The largest demographic group at Diekman Elem School is African American at 92.1% of enrollment, in Dolton, IL.
What is the Resource Investment Index for Diekman Elem School?
Diekman Elem School has a Resource Investment Index of 27/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Diekman Elem School rank among public schools in Dolton?
By Resource Investment Index, Diekman Elem School ranks #5 of 9 public schools in Dolton, 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 Dolton on the city page.
Is Diekman Elem School a good school?
Diekman Elem School earns 27/100 on the Resource Investment Index, with class sizes near the Illinois median. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Dolton Sd 149?
Besides Diekman Elem School, Dolton Sd 149 also operates Caroline Sibley Elem School (434 students), New Beginnings Learning Academy (288 students), and Berger-Vandenberg Elem School (266 students). See the Dolton Sd 149 district page for the complete list.
Related tools
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, or report a data error. Data current as of June 2026.