- Enrollment
- 565
- Students per teacher
- 20.9:1
- Resource Index
- 38/100
High school (grades 9-12) · Sullivan, IL
Sullivan High School
Federal NCES profile for Sullivan High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 173813003906
👥 S:T ratio 45
🌟 Gifted program 30
🎓 Counselors 68
📋 Attendance 42
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Sullivan High School earns 46/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #2 of 3
- public schools in Sullivan · Resource Index
- 46
- Resource Index · Typical
- 13.8:1
- students per teacher
- 317
- students enrolled
Sullivan High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Sullivan High School ranks #2 of 3 public schools in Sullivan, IL.
School address
District: Sullivan Cusd 300 · Illinois
NCES ID 173813003906 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-33 students YoY
Sullivan High School shrank from 361 students in 2022-23 to 328 in 2023-24 (-9.1%).
Teacher FTE lost 23.1 → 21.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-33 students YoY 173813003906 · Sullivan, IL High · SMALL · TRAD
317 enr · 13.8:1 · RII 46
Nearest enrollment peer: Sullivan Elem School (565 students)
Sullivan High School shrank from 361 students in 2022-23 to 328 in 2023-24 (-9.1%). Teacher FTE lost 23.1 → 21.6 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Sullivan High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Sullivan Elem
Sullivan Elem School
565 students
- This school
Sullivan High School
317 students
- Sullivan Middl
Sullivan Middle School
266 students
What this shows Sullivan High School reports 317 students on the CCD universe file.
How Sullivan High School compares
Sullivan High School is a shrinking campus on CCD: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.8:1 | ▼ 1% | 14:1 | 15.7:1 |
| Enrollment | 317 | top 60% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.8:1
Leaner classes than 59% of US schools, a middle-of-the-pack class size.
317
Bigger than 35% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
13.8:1
students per teacher
- 1% below state mean
Top 53% in Illinois - lower ratio than 47% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
23.3%
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
$11,306
per pupil, district-wide
- below Illinois avg of $18,196
Well below the U.S. average per-pupil spend, a notably leaner funding position that 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.
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.
Student-body diversity index 14.4/100
Simpson diversity index - at 14.4, Sullivan High School is less mixed than the Illinois school average of 38.9.
Programs
AP courses offered 10
District finance for Sullivan Cusd 300 reports $11,306 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Sullivan High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Sullivan Elem School | Larger | No free-lunch data | Higher S:T ratio |
| Sullivan Middle School | Similar size | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Sullivan High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 266
- Students per teacher
- 12.1:1
- Resource Index
- 47/100
Nationwide high 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 (~317 students)
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. CCD year-over-year: 361 (2022-23) → 328 (2023-24), down 33.
What is the student-teacher ratio at Sullivan High School?
The student-teacher ratio at Sullivan High School is 13.8:1, which is 1% lower than the Illinois average of 14:1 and 12% 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 Sullivan High School?
The largest demographic group at Sullivan High School is White at 92.4% of enrollment, in Sullivan, IL.
What is the Resource Investment Index for Sullivan High School?
Sullivan High School has a Resource Investment Index of 46/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Sullivan High School rank among public schools in Sullivan?
By Resource Investment Index, Sullivan High School ranks #2 of 3 public schools in Sullivan, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Sullivan Cusd 300?
Besides Sullivan High School, Sullivan Cusd 300 also operates Sullivan Elem School (565 students) and Sullivan Middle School (266 students). See the Sullivan Cusd 300 district page for the complete list.