- Enrollment
- 947
- Students per teacher
- 12.8:1
- Resource Index
- 60/100
Middle school (grades 6-8) · Oak Park, IL
Percy Julian Middle School
Federal NCES profile for Percy Julian Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 55/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 172925004582
👥 S:T ratio 50
🌟 Gifted program 70
📋 Attendance 46
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Percy Julian Middle School earns 55/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also more racially and ethnically mixed than most Illinois schools.
- #10 of 11
- public schools in Oak Park · Resource Index
- 55
- Resource Index · Higher
- 12.5:1
- students per teacher
- 927
- students enrolled
Percy Julian Middle School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Percy Julian Middle School ranks #10 of 11 public schools in Oak Park, IL.
School address
District: Oak Park Esd 97 · Illinois
NCES ID 172925004582 Verify on NCES CCD record →
NCES CCD universe card
School universe 172925004582 · Oak Park, IL Middle · MID · TRAD
927 enr · 12.5:1 · RII 55
Nearest enrollment peer: Gwendolyn Brooks Middle School (947 students)
Resource Investment Index #10 of 11 public schools in Oak Park. NCES Common Core of Data stamps for this campus. Read with this school → · District book → · Illinois schools → · Find another →
Percy Julian Middle School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Gwendolyn Broo
Gwendolyn Brooks Middle School
947 students
- This school
Percy Julian Middle School
927 students
- Abraham Lincol
Abraham Lincoln Elem School
580 students
- Longfellow Ele
Longfellow Elem School
524 students
- Oliver W Holme
Oliver W Holmes Elem School
513 students
- Irving Elem Sc
Irving Elem School
509 students
What this shows Percy Julian Middle School reports 927 students on the CCD universe file.
How Percy Julian Middle School compares
Percy Julian Middle 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 | 12.5:1 | ▼ 11% | 14:1 | 15.7:1 |
| Enrollment | 927 | top 8% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.5:1
Leaner classes than 71% of US schools, among the more generously staffed nationally.
927
Bigger than 90% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
12.5:1
students per teacher
- 11% below state mean
Top 35% in Illinois - lower ratio than 65% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
21.5%
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
$23,483
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
28
in-school suspensions + 9 out-of-school
Suspension rate: 3.0 per 100 students. Combined in-school and out-of-school rate: 4.0 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 55.4%
Hispanic or Latino 15.1%
African American 14.8%
Two or More 11.8%
Asian 2.8%
Largest group: White at 55.4% of enrollment.
Student-body diversity index 63.4/100
Simpson diversity index - at 63.4, Percy Julian Middle School is more mixed than the Illinois school average of 38.9.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Oak Park Esd 97, which includes Percy Julian Middle School.
$23,483
Per student
+29%
vs Illinois
Avg $18,196
+33%
vs U.S.
Avg $17,658
Revenue mix
Local 67.4%
State 29.7%
Federal 2.9%
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 Percy Julian Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Gwendolyn Brooks Middle School | Similar size | No free-lunch data | Similar S:T ratio |
| Abraham Lincoln Elem School | Smaller | No free-lunch data | Similar S:T ratio |
| Longfellow Elem School | Smaller | No free-lunch data | Lower S:T ratio |
| Oliver W Holmes Elem School | Smaller | No free-lunch data | Similar S:T ratio |
| Irving Elem School | Smaller | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Percy Julian Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 580
- Students per teacher
- 11.6:1
- Resource Index
- 64/100
- Enrollment
- 524
- Students per teacher
- 10.5:1
- Resource Index
- 64/100
- Enrollment
- 513
- Students per teacher
- 13.5:1
- Resource Index
- 58/100
- Enrollment
- 509
- Students per teacher
- 11.6:1
- Resource Index
- 64/100
Similar middle schools in Oak Park
1 comparable middle schools (grades 6-8) serving the same city.
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 (~927 students)
Frequently asked questions about Percy Julian Middle School
How many students attend Percy Julian Middle School?
Percy Julian Middle School has 927 students enrolled. It is a middle school in Oak Park, IL.
What is the student-teacher ratio at Percy Julian Middle School?
The student-teacher ratio at Percy Julian Middle School is 12.5:1, which is 11% 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 Percy Julian Middle School?
The largest demographic group at Percy Julian Middle School is White at 55.4% of enrollment, in Oak Park, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 63.4/100.
What is the Resource Investment Index for Percy Julian Middle School?
Percy Julian Middle School has a Resource Investment Index of 55/100 (higher 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 Percy Julian Middle School rank among public schools in Oak Park?
By Resource Investment Index, Percy Julian Middle School ranks #10 of 11 public schools in Oak Park, 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 Oak Park on the city page.
What other schools are in Oak Park Esd 97?
Besides Percy Julian Middle School, Oak Park Esd 97 also operates Gwendolyn Brooks Middle School (947 students), Abraham Lincoln Elem School (580 students), and Longfellow Elem School (524 students). See the Oak Park Esd 97 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.