Enrollment
317
Illinois · 2024-25 NCES data
2024-25 NCES data High school (grades 9-12) NCES 173813003906
Sullivan High School — Sullivan, IL
Federal NCES profile for Sullivan High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 45/100.
👥 Class size 37
📚 AP courses 50
🌟 Gifted program 30
🎓 Counselors 68
📋 Attendance 42
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Sullivan Cusd 300 · Illinois
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
23.0
Federal CCD staff survey
Students per teacher
15.7:1
vs 14.6:1 Illinois avg
+8% vs state
Student-teacher ratio in context
How Sullivan High School compares with Illinois and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Sullivan High School reports 317 enrolled students to the National Center for Education Statistics (NCES) alongside 23.0 full-time-equivalent teachers, producing a 15.7:1 student-teacher ratio. That figure sits 8% above the Illinois state mean of 14.6:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 1% lower, a useful calibration for families comparing districts across state lines.
The school offers 10 Advanced Placement courses, a stronger academic pipeline indicator than enrollment alone. Counselor coverage works out to roughly 159 students per counselor, meeting the American School Counselor Association recommendation of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 23.3% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Sullivan Cusd 300 spends $12,217 per pupil district-wide, below the Illinois average of $20,099 and below the national average of $19,490. Revenue comes 37.5% from local sources (property taxes), 46.3% from the state, and 16.2% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 45/100 (D), calculated from 5 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Sullivan High School compares
Cross-validating school-level NCES values against Illinois state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.7:1 | ▲ 8% | 14.6:1 | 15.9:1 |
| Enrollment | 317 | top 40% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Staffing depth
15.7:1
students per teacher
— 8% above state mean
Top 77% in Illinois — lower ratio than 23% of state schools
Between 15:1 and 20:1 — in line with the typical U.S. public-school staffing range.
Engagement
23.3%
chronically absent (missed 10%+ of school days)
Chronic absenteeism at or above 20% — the CDC threshold for "high" — signals significant barriers to regular attendance.
Funding equity
$12,217
per pupil, district-wide
— below Illinois avg of $20,099
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 159 students — the combined health-and-guidance staffing load for this school.
Discipline context
41
in-school suspensions + 19 out-of-school
Suspension rate: 12.9 per 100 students. Combined in-school and out-of-school rate: 18.9 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 317 Top 40% in Illinois — larger than 60% of 3,845 state schools
Teachers (FTE) 23.0
Students per teacher 15.7:1 +8% vs state
Free-lunch eligible —
NCES ID 173813003906
Student demographics
White 92.4%
Two or More 3.8%
Hispanic or Latino 2.5%
African American 0.6%
Asian 0.3%
American Indian / Alaska Native 0.3%
Largest group: White at 92.4% of enrollment.
Programs & staff
AP courses offered 10
Counselors (FTE) 2.0
Students per counselor 159:1
Discipline & special education
Chronically absent 23.3%
In-school suspensions 41
Out-of-school suspensions 19
Funding & spending
District-wide per-pupil expenditure for Sullivan Cusd 300, which includes Sullivan High School.
$12,217
Per student
-39%
vs Illinois
Avg $20,099
-37%
vs U.S.
Avg $19,490
Revenue mix
Local 37.5%
State 46.3%
Federal 16.2%
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.
Other Schools in This District
- Enrollment
- 565
- Students per teacher
- 17.9:1
- Enrollment
- 266
- Students per teacher
- 15.2:1
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Sullivan High School
How many students attend Sullivan High School?
Sullivan High School has 317 students enrolled. It is a high school in Sullivan, IL.
What is the student-teacher ratio at Sullivan High School?
The student-teacher ratio at Sullivan High School is 15.7:1, which is 8% higher than the Illinois average of 14.6:1 and 1% lower than the national average of 15.9:1.
What is the racial and ethnic makeup of Sullivan High School?
The largest demographic group at Sullivan High School is White at 92.4%. The school serves a diverse student body in Sullivan, IL.
What is the Resource Investment Index for Sullivan High School?
Sullivan High School has a Resource Investment Index of 45/100 (D) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.