- Enrollment
- 2,399
- Students per teacher
- 18:1
- Resource Index
- 27/100
Middle school (grades 6-8) · Joliet, IL
Aux Sable Middle Sch
Federal NCES profile for Aux Sable Middle Sch, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 173174005862
👥 S:T ratio 34
🌟 Gifted program 30
📋 Attendance 24
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Aux Sable Middle Sch earns 29/100 on the Resource Investment Index, with class sizes larger than 83% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools.
- #2 of 5
- middle schools in Joliet · Resource Index
- 29
- Resource Index · Lower
- 16.5:1
- large classes for Illinois
- 844
- students enrolled
Aux Sable Middle Sch has class sizes larger than 83% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Aux Sable Middle Sch ranks #2 of 5 middle schools in Joliet, IL.
School address
District: Plainfield Sd 202 · Illinois
NCES ID 173174005862 Verify on NCES CCD record →
NCES CCD universe card
School universe 173174005862 · Joliet, IL Middle · MID · TRAD
844 enr · 16.5:1 · RII 29
Nearest enrollment peer: Plainfield North High School (2,399 students)
Resource Investment Index #2 of 5 middle schools in Joliet. NCES Common Core of Data stamps for this campus. Read with this school → · District book → · Illinois schools → · Find another →
Aux Sable Middle Sch in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Plainfield Nor
Plainfield North High School
2,399 students
- Plainfield Sou
Plainfield South High School
2,323 students
- Plainfield Eas
Plainfield East High School
1,825 students
- Plainfield Hig
Plainfield High School
1,800 students
- John F Kennedy 912
John F Kennedy Middle Sch
912 students
- This school 844
Aux Sable Middle Sch
844 students
What this shows Aux Sable Middle Sch reports 844 students on the CCD universe file.
How Aux Sable Middle Sch compares
Aux Sable Middle Sch on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.5:1 | ▲ 18% | 14:1 | 15.7:1 |
| Enrollment | 844 | top 10% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.5:1
Leaner classes than 34% of US schools, a middle-of-the-pack class size.
844
Bigger than 87% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
16.5:1
students per teacher
- 18% above state mean
Top 83% in Illinois - lower ratio than 17% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
30.5%
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
$15,896
per pupil, district-wide
- below Illinois avg of $18,196
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
106
in-school suspensions + 50 out-of-school
Suspension rate: 12.6 per 100 students. Combined in-school and out-of-school rate: 18.5 per 100 students. Reported via the Civil Rights Data Collection. Includes 4 expulsions.
Student demographics
White 41.9%
Hispanic or Latino 28.1%
African American 18.8%
Two or More 6.0%
Asian 4.5%
American Indian / Alaska Native 0.6%
Largest group: White at 41.9% of enrollment.
Student-body diversity index 70.4/100
Simpson diversity index - at 70.4, Aux Sable Middle Sch is more mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Plainfield Sd 202, which includes Aux Sable Middle Sch.
$15,896
Per student
-13%
vs Illinois
Avg $18,196
-10%
vs U.S.
Avg $17,658
Revenue mix
Local 50.4%
State 43.1%
Federal 6.6%
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 Aux Sable Middle Sch Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Plainfield North High School | Larger | No free-lunch data | Higher S:T ratio |
| Plainfield South High School | Larger | No free-lunch data | Similar S:T ratio |
| Plainfield East High School | Larger | No free-lunch data | Similar S:T ratio |
| Plainfield High School | Larger | No free-lunch data | Lower S:T ratio |
| John F Kennedy Middle Sch | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Aux Sable Middle Sch's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,323
- Students per teacher
- 17:1
- Resource Index
- 32/100
- Enrollment
- 1,825
- Students per teacher
- 15.1:1
- Resource Index
- 29/100
- Enrollment
- 1,800
- Students per teacher
- 14.8:1
- Resource Index
- 28/100
- Enrollment
- 912
- Students per teacher
- 16:1
- Resource Index
- 35/100
Similar middle schools in Joliet
4 comparable middle schools (grades 6-8) serving the same city.
Hufford Junior High School
Standard public school
1,072 students 14.7:1 students per teacher
Washington Jr High & Academy Prgm
Standard public school
724 students 13.2:1 students per teacher
Dirksen Junior High School
Standard public school
653 students 13.9:1 students per teacher
Gompers Junior High School
Standard public school
615 students 10.3:1 students per teacher
Nationwide middle 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 (~844 students)
Frequently asked questions about Aux Sable Middle Sch
How many students attend Aux Sable Middle Sch?
Aux Sable Middle Sch has 844 students enrolled. It is a middle school in Joliet, IL.
What is the student-teacher ratio at Aux Sable Middle Sch?
The student-teacher ratio at Aux Sable Middle Sch is 16.5:1, which is 18% higher than the Illinois average of 14:1 and 5% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Aux Sable Middle Sch?
The largest demographic group at Aux Sable Middle Sch is White at 41.9% of enrollment, in Joliet, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 70.4/100.
What is the Resource Investment Index for Aux Sable Middle Sch?
Aux Sable Middle Sch has a Resource Investment Index of 29/100 (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 Aux Sable Middle Sch rank among middle schools in Joliet?
By Resource Investment Index, Aux Sable Middle Sch ranks #2 of 5 middle schools in Joliet, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Joliet on the city page.
What other schools are in Plainfield Sd 202?
Besides Aux Sable Middle Sch, Plainfield Sd 202 also operates Plainfield North High School (2,399 students), Plainfield South High School (2,323 students), and Plainfield East High School (1,825 students). See the Plainfield Sd 202 district page for the complete list.
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.