Enrollment
269
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Aurora, IL
C I Johnson Elem School
Federal NCES profile for C I Johnson Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 63/100.
2024-25 NCES dataElementary school (grades K-5)NCES 170468000145
👥 S:T ratio 51
🌟 Gifted program 70
📋 Attendance 69
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
C I Johnson Elem School earns 63/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #1 of 10
- elementary schools in Aurora · Resource Index
- 63
- Resource Index · Higher
- 12.2:1
- students per teacher
- 269
- students enrolled
C I Johnson Elem School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, C I Johnson Elem School ranks #1 of 10 elementary schools in Aurora, IL.
School address
District: Aurora East Usd 131 · Illinois
NCES ID 170468000145 Verify on NCES CCD record →
Teachers (FTE)
22.0
Federal CCD staff survey
Students per teacher
12.2:1
vs 14:1 Illinois avg
-13% vs state
Student-teacher ratio in context
How C I Johnson Elem School compares with Illinois and U.S. medians
What stands out at C I Johnson Elem School
C I Johnson Elem School is a mid-sized elementary school in Aurora, Illinois, enrolling 269 students.
Class sizes run a bit leaner than typical: 12.2:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
Enrollment of 269 puts it in the smaller third of Illinois schools by headcount.
Its Resource Investment Index outscores 96% of the 3,845 Illinois schools with a score on record, a top-tier result on this measure.
Its student body is predominantly Hispanic or Latino (84% of enrollment) (diversity index 29/100).
12.3% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Its district draws 19.7% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Aurora's elementary schools, it stands alongside Gwendolyn Brooks Elementary (683 students): C I Johnson Elem School is smaller than that campus by headcount and runs leaner classes (12.2:1 vs 16.3:1).
Aurora East Usd 131 also operates East High School (4,020 students) and Henry W Cowherd Middle School (807 students) alongside C I Johnson 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 C I Johnson Elem School compares
C I Johnson 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 | 12.2:1 | ▼ 13% | 14:1 | 15.7:1 |
| Enrollment | 269 | top 70% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.2:1
Leaner classes than 74% of US schools, among the more generously staffed nationally.
269
Bigger than 28% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
12.2:1
students per teacher
- 13% below state mean
Top 31% in Illinois - lower ratio than 69% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
12.3%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$15,003
per pupil, district-wide
- below Illinois avg of $17,042
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
11
in-school suspensions + 8 out-of-school
Suspension rate: 4.1 per 100 students. Combined in-school and out-of-school rate: 7.1 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
Hispanic or Latino 84.0%
White 6.7%
African American 6.3%
Asian 1.5%
Two or More 1.1%
American Indian / Alaska Native 0.4%
Largest group: Hispanic or Latino at 84.0% of enrollment.
Student-body diversity index 28.6/100
Simpson diversity index - at 28.6, C I Johnson Elem School is less mixed than the Illinois school average of 38.9.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Aurora East Usd 131, which includes C I Johnson Elem School.
$15,003
Per student
-12%
vs Illinois
Avg $17,042
-10%
vs U.S.
Avg $16,593
Revenue mix
Local 20.0%
State 60.2%
Federal 19.7%
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 C I Johnson Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| East High School | Larger | No free-lunch data | Higher S:T ratio |
| Henry W Cowherd Middle School | Larger | No free-lunch data | Similar S:T ratio |
| C F Simmons Middle School | Larger | No free-lunch data | Similar S:T ratio |
| K D Waldo Middle School | Larger | No free-lunch data | Similar S:T ratio |
| Olney C Allen Elem School | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to C I Johnson Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 4,020
- Students per teacher
- 18.6:1
- Resource Index
- 55/100
- Enrollment
- 807
- Students per teacher
- 12.6:1
- Resource Index
- 63/100
- Enrollment
- 792
- Students per teacher
- 13:1
- Resource Index
- 59/100
- Enrollment
- 729
- Students per teacher
- 12.4:1
- Resource Index
- 61/100
- Enrollment
- 712
- Students per teacher
- 16.6:1
- Resource Index
- 44/100
Similar elementary schools in Aurora
6 comparable elementary schools (grades K-5) serving the same city.
Gwendolyn Brooks Elementary
Standard public school
683 students 16.3:1 students per teacher
Reba O Steck Elementary School
Standard public school
669 students 17.2:1 students per teacher
The Wheatlands Elementary School
Standard public school
613 students 17.5:1 students per teacher
Nancy Young Elementary School
Standard public school
574 students 15.1:1 students per teacher
Homestead Elementary School
Standard public school
511 students 13.8:1 students per teacher
Mccarty Elementary School
Standard public school
478 students 13.7:1 students per teacher
Similar elementary 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 (~269 students)
Similar student-teacher ratio (~12.2:1)
Next steps
Verify locally before acting on C I Johnson Elem School's federal record.
- Compare C I Johnson Elem School against another school. Compare schools
- Aurora East Usd 131'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 C I Johnson Elem School
How many students attend C I Johnson Elem School?
C I Johnson Elem School has 269 students enrolled. It is an elementary school in Aurora, IL.
What is the student-teacher ratio at C I Johnson Elem School?
The student-teacher ratio at C I Johnson Elem School is 12.2:1, which is 13% lower than the Illinois average of 14:1 and 22% 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 C I Johnson Elem School?
The largest demographic group at C I Johnson Elem School is Hispanic or Latino at 84.0% of enrollment, in Aurora, IL.
What is the Resource Investment Index for C I Johnson Elem School?
C I Johnson Elem School has a Resource Investment Index of 63/100 (higher 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 C I Johnson Elem School rank among elementary schools in Aurora?
By Resource Investment Index, C I Johnson Elem School ranks #1 of 10 elementary schools in Aurora, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Aurora on the city page.
Is C I Johnson Elem School a good school?
C I Johnson Elem School earns 63/100 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 Aurora East Usd 131?
Besides C I Johnson Elem School, Aurora East Usd 131 also operates East High School (4,020 students), Henry W Cowherd Middle School (807 students), and C F Simmons Middle School (792 students). See the Aurora East Usd 131 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.