Enrollment
762
Illinois · 2024-25 NCES data
High school (grades 9-12) · Chicago, IL
Sullivan High School
Federal NCES profile for Sullivan High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 27/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 170993001149
👥 S:T ratio 38
📚 AP courses 5
🌟 Gifted program 30
🎓 Counselors 62
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Sullivan High School earns 27/100 on the Resource Investment Index, with class sizes larger than 76% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools.
- #62 of 130
- high schools in Chicago · Resource Index
- 27
- Resource Index · Lower
- 15.6:1
- large classes for Illinois
- 762
- students enrolled
Sullivan High School has class sizes larger than 76% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Sullivan High School ranks #62 of 130 high schools in Chicago, IL.
School address
District: City of Chicago Sd 299 · Illinois
NCES ID 170993001149 Verify on NCES CCD record →
Teachers (FTE)
49.0
Federal CCD staff survey
Students per teacher
15.6:1
vs 14:1 Illinois avg
+11% vs state
Student-teacher ratio in context
How Sullivan High School compares with Illinois and U.S. medians
What stands out at Sullivan High School
Sullivan High School is a large high school in Chicago, Illinois, enrolling 762 students.
Class loads run somewhat heavier than typical: 15.6:1 puts it in the larger third of Illinois schools by student-teacher ratio.
Enrollment of 762 puts it in the larger third of Illinois schools by headcount.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by Hispanic or Latino (36%) and African American (31%), more mixed than most schools in the state (diversity index 73/100).
On the academic-pipeline side it reports 1 Advanced Placement course.
Counselor coverage is strong, about 191 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 56.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding City of Chicago Sd 299 spends $21,050 per pupil, 24% above the Illinois average, a better-resourced district than most.
Its district draws 17.4% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Chicago's high schools, it stands alongside Curie Metropolitan High School (3,099 students): Sullivan High School is smaller than that campus by headcount and runs leaner classes (15.6:1 vs 16.1:1).
City of Chicago Sd 299 also operates Lane Technical High School (4,604 students) and Taft High School (4,487 students) alongside Sullivan 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 Sullivan High School compares
Sullivan 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 | 15.6:1 | ▲ 11% | 14:1 | 15.7:1 |
| Enrollment | 762 | top 12% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.6:1
Leaner classes than 41% of US schools, a middle-of-the-pack class size.
762
Bigger than 84% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
15.6:1
students per teacher
- 11% above state mean
Top 76% in Illinois - lower ratio than 24% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
56.8%
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
$21,050
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
Counselors4.0 FTE
Per 191 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 42 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 5.5 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
Hispanic or Latino 36.4%
African American 31.0%
White 15.7%
Asian 11.4%
Two or More 5.0%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Hispanic or Latino at 36.4% of enrollment.
Student-body diversity index 73.1/100
Simpson diversity index - at 73.1, Sullivan High School is more mixed than the Illinois school average of 38.9.
Programs
AP courses offered 1
Funding & spending
District-wide per-pupil expenditure for City of Chicago Sd 299, which includes Sullivan High School.
$21,050
Per student
+24%
vs Illinois
Avg $17,042
+27%
vs U.S.
Avg $16,593
Revenue mix
Local 52.8%
State 29.9%
Federal 17.4%
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.
How Sullivan High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lane Technical High School | Larger | No free-lunch data | Higher S:T ratio |
| Taft High School | Larger | No free-lunch data | Similar S:T ratio |
| Curie Metropolitan High School | Larger | No free-lunch data | Similar S:T ratio |
| Kenwood Academy High School | Larger | No free-lunch data | Higher S:T ratio |
| Young Magnet High School | Larger | No free-lunch data | Higher 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
- 4,604
- Students per teacher
- 17.8:1
- Resource Index
- 38/100
- Enrollment
- 4,487
- Students per teacher
- 16.7:1
- Resource Index
- 41/100
- Enrollment
- 3,099
- Students per teacher
- 16.1:1
- Resource Index
- 32/100
- Enrollment
- 2,268
- Students per teacher
- 18.6:1
- Resource Index
- 34/100
- Enrollment
- 2,223
- Students per teacher
- 17.5:1
- Resource Index
- 52/100
Similar high schools in Chicago
6 comparable high schools (grades 9-12) serving the same city.
Curie Metropolitan High School
Standard public school
3,099 students 16.1:1 students per teacher
Lincoln Park High School
Standard public school
2,214 students 16.3:1 students per teacher
Jones College Prep High School
Standard public school
1,954 students 16.7:1 students per teacher
Mather High School
Standard public school
1,777 students 14.2:1 students per teacher
Thomas Kelly College Preparatory
Standard public school
1,762 students 14.1:1 students per teacher
Hubbard High School
Standard public school
1,710 students 15.8:1 students per teacher
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 (~762 students)
Similar student-teacher ratio (~15.6:1)
Next steps
Verify locally before acting on Sullivan High School's federal record.
- Compare Sullivan High School against another school. Compare schools
- City of Chicago Sd 299'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 Sullivan High School
How many students attend Sullivan High School?
Sullivan High School has 762 students enrolled. It is a high school in Chicago, IL.
What is the student-teacher ratio at Sullivan High School?
The student-teacher ratio at Sullivan High School is 15.6:1, which is 11% higher than the Illinois average of 14:1 and 1% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Sullivan High School?
The largest demographic group at Sullivan High School is Hispanic or Latino at 36.4% of enrollment, in Chicago, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 73.1/100.
What is the Resource Investment Index for Sullivan High School?
Sullivan High School has a Resource Investment Index of 27/100 (lower 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 Sullivan High School rank among high schools in Chicago?
By Resource Investment Index, Sullivan High School ranks #62 of 130 high schools in Chicago, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Chicago on the city page.
Is Sullivan High School a good school?
Sullivan High School earns 27/100 on the Resource Investment Index, with class sizes larger than 76% 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 City of Chicago Sd 299?
Besides Sullivan High School, City of Chicago Sd 299 also operates Lane Technical High School (4,604 students), Taft High School (4,487 students), and Curie Metropolitan High School (3,099 students). See the City of Chicago Sd 299 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.