Enrollment
1,803
Illinois · 2024-25 NCES data
High school (grades 9-12) · Lansing, IL
Thornton Fractnl So High School
Federal NCES profile for Thornton Fractnl So High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 35/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 173894003953
👥 S:T ratio 32
📚 AP courses 60
🌟 Gifted program 30
🎓 Counselors 28
📋 Attendance 23
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Thornton Fractnl So High School earns 35/100 on the Resource Investment Index, with class sizes larger than 87% of Illinois schools. It is also one of the largest schools in Illinois.
- #5 of 8
- public schools in Lansing · Resource Index
- 35
- Resource Index · Typical
- 16.9:1
- large classes for Illinois
- 1,803
- students enrolled
Thornton Fractnl So High School has class sizes larger than 87% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Thornton Fractnl So High School ranks #5 of 8 public schools in Lansing, IL.
School address
District: Thornton Fractional Twp Hsd 215 · Illinois
NCES ID 173894003953 Verify on NCES CCD record →
Teachers (FTE)
107.0
Federal CCD staff survey
Students per teacher
16.9:1
vs 14:1 Illinois avg
+21% vs state
Student-teacher ratio in context
How Thornton Fractnl So High School compares with Illinois and U.S. medians
What stands out at Thornton Fractnl So High School
Thornton Fractnl So High School is a large high school in Lansing, Illinois, enrolling 1,803 students.
Class loads run heavy: 16.9:1 is larger than about 87% of Illinois schools and 21% above the 14:1 state mean, so each teacher carries more students than is typical.
By headcount it is one of the larger campuses in Illinois, bigger than 97% of state schools at 1,803 students.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by African American (68%) and Hispanic or Latino (25%) (diversity index 47/100).
On the academic-pipeline side it reports 12 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 361 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 30.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The federal civil-rights collection also records 2 expulsions at this campus for 2021-22.
Its district, Thornton Fractional Twp Hsd 215, also runs Thornton Fractnl No High School (1,425 students).
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 Thornton Fractnl So High School compares
Thornton Fractnl So 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 | 16.9:1 | ▲ 21% | 14:1 | 15.7:1 |
| Enrollment | 1,803 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.9:1
Leaner classes than 31% of US schools, heavier class loads than most.
1,803
Bigger than 97% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
16.9:1
students per teacher
- 21% above state mean
Top 87% in Illinois - lower ratio than 13% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
30.8%
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
$18,628
per pupil, district-wide
- above Illinois avg of $17,042
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors5.0 FTE
Per 361 students, the combined health-and-guidance staffing load for this school.
Discipline context
239
in-school suspensions + 90 out-of-school
Suspension rate: 13.3 per 100 students. Combined in-school and out-of-school rate: 18.2 per 100 students. Reported via the Civil Rights Data Collection. Includes 2 expulsions.
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
African American 68.3%
Hispanic or Latino 24.6%
White 5.6%
Asian 0.6%
Two or More 0.6%
American Indian / Alaska Native 0.3%
Native Hawaiian / Pacific Islander 0.1%
Largest group: African American at 68.3% of enrollment.
Student-body diversity index 47.0/100
Simpson diversity index - at 47.0, Thornton Fractnl So High School is more mixed than the Illinois school average of 38.9.
Programs
AP courses offered 12
Funding & spending
District-wide per-pupil expenditure for Thornton Fractional Twp Hsd 215, which includes Thornton Fractnl So High School.
$18,628
Per student
+9%
vs Illinois
Avg $17,042
+12%
vs U.S.
Avg $16,593
Revenue mix
Local 43.3%
State 45.1%
Federal 11.5%
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 Thornton Fractnl So High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Thornton Fractnl No High School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Thornton Fractnl So High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,425
- Students per teacher
- 16.4:1
- Resource Index
- 34/100
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 (~1,803 students)
Next steps
Verify locally before acting on Thornton Fractnl So High School's federal record.
- Compare Thornton Fractnl So High School against another school. Compare schools
- Thornton Fractional Twp Hsd 215'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 Thornton Fractnl So High School
How many students attend Thornton Fractnl So High School?
Thornton Fractnl So High School has 1,803 students enrolled. It is a high school in Lansing, IL.
What is the student-teacher ratio at Thornton Fractnl So High School?
The student-teacher ratio at Thornton Fractnl So High School is 16.9:1, which is 21% higher than the Illinois average of 14:1 and 8% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Thornton Fractnl So High School?
The largest demographic group at Thornton Fractnl So High School is African American at 68.3% of enrollment, in Lansing, IL.
What is the Resource Investment Index for Thornton Fractnl So High School?
Thornton Fractnl So High School has a Resource Investment Index of 35/100 (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 Thornton Fractnl So High School rank among public schools in Lansing?
By Resource Investment Index, Thornton Fractnl So High School ranks #5 of 8 public schools in Lansing, 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 Lansing on the city page.
Is Thornton Fractnl So High School a good school?
Thornton Fractnl So High School earns 35/100 on the Resource Investment Index, with class sizes larger than 87% of Illinois schools. 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 Thornton Fractional Twp Hsd 215?
Besides Thornton Fractnl So High School, Thornton Fractional Twp Hsd 215 also operates Thornton Fractnl No High School (1,425 students). See the Thornton Fractional Twp Hsd 215 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.