Enrollment
447
Illinois · 2024-25 NCES data
High school (grades 9-12) · Lisle, IL
Lisle High School
Federal NCES profile for Lisle High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 43/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 172320002553
👥 S:T ratio 54
📚 AP courses 45
🌟 Gifted program 30
🎓 Counselors 55
📋 Attendance 33
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Lisle High School earns 43/100 on the Resource Investment Index, with class sizes smaller than 77% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools.
- #4 of 4
- public schools in Lisle · Resource Index
- 43
- Resource Index · Typical
- 11.5:1
- small classes for Illinois
- 447
- students enrolled
Lisle High School has class sizes smaller than 77% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Lisle High School ranks #4 of 4 public schools in Lisle, IL.
School address
District: Lisle Cusd 202 · Illinois
NCES ID 172320002553 Verify on NCES CCD record →
Teachers (FTE)
39.0
Federal CCD staff survey
Students per teacher
11.5:1
vs 14:1 Illinois avg
-18% vs state
Student-teacher ratio in context
How Lisle High School compares with Illinois and U.S. medians
What stands out at Lisle High School
Lisle High School is a mid-sized high school in Lisle, Illinois, enrolling 447 students.
Class sizes run a bit leaner than typical: 11.5:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
With 447 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is led by White (55%) and Hispanic or Latino (23%), more mixed than most schools in the state (diversity index 63/100).
On the academic-pipeline side it reports 9 Advanced Placement courses.
Counselor coverage is strong, about 224 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 26.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Lisle Cusd 202 spends $26,379 per pupil, 55% above the Illinois average, a better-resourced district than most.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Lisle Cusd 202 also operates Lisle Elementary School (777 students) and Lisle Jr High School (338 students) alongside Lisle High 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 Lisle High School compares
Lisle High 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 | 11.5:1 | ▼ 18% | 14:1 | 15.7:1 |
| Enrollment | 447 | top 38% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.5:1
Leaner classes than 79% of US schools, among the more generously staffed nationally.
447
Bigger than 54% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
11.5:1
students per teacher
- 18% below state mean
Top 23% in Illinois - lower ratio than 77% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
26.8%
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
$26,379
per pupil, district-wide
- above Illinois avg of $17,042
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors2.0 FTE
Per 224 students, the combined health-and-guidance staffing load for this school.
Discipline context
44
in-school suspensions + 12 out-of-school
Suspension rate: 9.8 per 100 students. Combined in-school and out-of-school rate: 12.5 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
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
White 54.5%
Hispanic or Latino 22.9%
African American 9.9%
Two or More 7.0%
Asian 5.6%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 54.5% of enrollment.
Student-body diversity index 63.3/100
Simpson diversity index - at 63.3, Lisle High School is more mixed than the Illinois school average of 38.9.
Programs
AP courses offered 9
Funding & spending
District-wide per-pupil expenditure for Lisle Cusd 202, which includes Lisle High School.
$26,379
Per student
+55%
vs Illinois
Avg $17,042
+59%
vs U.S.
Avg $16,593
Revenue mix
Local 70.9%
State 24.2%
Federal 4.8%
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 Lisle High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lisle Elementary School | Larger | No free-lunch data | Higher S:T ratio |
| Lisle Jr High School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Lisle High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 777
- Students per teacher
- 16.2:1
- Resource Index
- 52/100
- Enrollment
- 338
- Students per teacher
- 11.3:1
- Resource Index
- 60/100
Similar high 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 (~447 students)
Similar student-teacher ratio (~11.5:1)
Next steps
Verify locally before acting on Lisle High School's federal record.
- Compare Lisle High School against another school. Compare schools
- Lisle Cusd 202'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 Lisle High School
How many students attend Lisle High School?
Lisle High School has 447 students enrolled. It is a high school in Lisle, IL.
What is the student-teacher ratio at Lisle High School?
The student-teacher ratio at Lisle High School is 11.5:1, which is 18% lower than the Illinois average of 14:1 and 27% 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 Lisle High School?
The largest demographic group at Lisle High School is White at 54.5% of enrollment, in Lisle, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 63.3/100.
What is the Resource Investment Index for Lisle High School?
Lisle High School has a Resource Investment Index of 43/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Lisle High School rank among public schools in Lisle?
By Resource Investment Index, Lisle High School ranks #4 of 4 public schools in Lisle, 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 Lisle on the city page.
Is Lisle High School a good school?
Lisle High School earns 43/100 on the Resource Investment Index, with class sizes smaller than 77% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools. 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 Lisle Cusd 202?
Besides Lisle High School, Lisle Cusd 202 also operates Lisle Elementary School (777 students) and Lisle Jr High School (338 students). See the Lisle Cusd 202 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.