Enrollment
1,284
Illinois · 2024-25 NCES data
High school (grades 9-12) · Lemont, IL
Lemont Twp High School
Federal NCES profile for Lemont Twp High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 51/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 172250002508
👥 S:T ratio 44
📚 AP courses 95
🌟 Gifted program 30
🎓 Counselors 49
📋 Attendance 40
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Lemont Twp High School earns 51/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also one of the largest schools in Illinois.
- #4 of 5
- public schools in Lemont · Resource Index
- 51
- Resource Index · Higher
- 14.1:1
- students per teacher
- 1,284
- students enrolled
Lemont Twp High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Lemont Twp High School ranks #4 of 5 public schools in Lemont, IL.
School address
District: Lemont Twp Hsd 210 · Illinois
NCES ID 172250002508 Verify on NCES CCD record →
Teachers (FTE)
91.0
Federal CCD staff survey
Students per teacher
14.1:1
vs 14:1 Illinois avg
+1% vs state
Student-teacher ratio in context
How Lemont Twp High School compares with Illinois and U.S. medians
What stands out at Lemont Twp High School
Lemont Twp High School is a large high school in Lemont, Illinois, enrolling 1,284 students.
At 14.1:1, its student-teacher ratio sits close to the Illinois median, within a few percentage points of the 14:1 state norm, neither notably crowded nor notably small.
By headcount it is one of the larger campuses in Illinois, bigger than 95% of state schools at 1,284 students.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is predominantly White (80% of enrollment) (diversity index 34/100).
On the academic-pipeline side it reports 19 Advanced Placement courses.
Counselor coverage runs a bit thin, about 257 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance runs somewhat below the norm, with 24.1% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Lemont Twp Hsd 210 spends $20,991 per pupil, 23% above the Illinois average, a better-resourced district than most.
Lemont Twp Hsd 210 operates only this one school, so Lemont Twp High School has no district-mates to compare against locally. At 1,284 students, it is also among the largest single-school districts in Illinois, well beyond the enrollment of a typical standalone charter.
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 Lemont Twp High School compares
Lemont Twp 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 | 14.1:1 | ▲ 1% | 14:1 | 15.7:1 |
| Enrollment | 1,284 | top 5% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.1:1
Leaner classes than 56% of US schools, a middle-of-the-pack class size.
1,284
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
14.1:1
students per teacher
- 1% above state mean
Top 58% in Illinois - lower ratio than 42% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
24.1%
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
$20,991
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
Counselors5.0 FTE
Per 257 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 28 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 2.2 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
White 80.4%
Hispanic or Latino 11.6%
Asian 4.0%
Two or More 3.3%
African American 0.8%
Largest group: White at 80.4% of enrollment.
Student-body diversity index 33.7/100
Simpson diversity index - at 33.7, Lemont Twp High School is less mixed than the Illinois school average of 38.9.
Programs
AP courses offered 19
Funding & spending
District-wide per-pupil expenditure for Lemont Twp Hsd 210, which includes Lemont Twp High School.
$20,991
Per student
+23%
vs Illinois
Avg $17,042
+27%
vs U.S.
Avg $16,593
Revenue mix
Local 71.5%
State 19.2%
Federal 9.4%
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.
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 (~1,284 students)
Next steps
Verify locally before acting on Lemont Twp High School's federal record.
- Compare Lemont Twp High School against another school. Compare schools
- Lemont Twp Hsd 210'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 Lemont Twp High School
How many students attend Lemont Twp High School?
Lemont Twp High School has 1,284 students enrolled. It is a high school in Lemont, IL.
What is the student-teacher ratio at Lemont Twp High School?
The student-teacher ratio at Lemont Twp High School is 14.1:1, which is 1% higher than the Illinois average of 14:1 and 10% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Lemont Twp High School?
The largest demographic group at Lemont Twp High School is White at 80.4% of enrollment, in Lemont, IL.
What is the Resource Investment Index for Lemont Twp High School?
Lemont Twp High School has a Resource Investment Index of 51/100 (higher 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 Lemont Twp High School rank among public schools in Lemont?
By Resource Investment Index, Lemont Twp High School ranks #4 of 5 public schools in Lemont, 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 Lemont on the city page.
Is Lemont Twp High School a good school?
Lemont Twp High School earns 51/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also one of the largest schools in Illinois. 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 Lemont Twp Hsd 210?
None reported; Lemont Twp Hsd 210 operates only Lemont Twp High School as a public school district in NCES's records.
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.