Serving 317 students in grades 9-12, Sullivan High School ranks in the bottom 50% of all schools in Illinois for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 15-19% (which is lower than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 25-29% (which is lower than the Illinois state average of 30%).
The student-teacher ratio of 15:1 is higher than the Illinois state level of 13:1.
Minority enrollment is 8% of the student body (majority Hispanic), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 317 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 8%
- Graduation Rate: 85-89% (Top 50% in IL)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 15-19% (Btm 50%)
- Reading Proficiency: 25-29% (Top 50%)
- Science Proficiency: 60-64% (Top 30%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
Top Rankings
Sullivan High School ranks among the top 20% of public schools in Illinois for:
Category
Attribute
Most improved public schools
School Overview
Sullivan High School's student population of 317 students has stayed relatively flat over five school years.
The teacher population of 21 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
317 students
Total Classroom Teachers
21 teachers
School Calendar
School Rankings
Sullivan High School ranks within the bottom 50% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Sullivan High School is 0.15, which is less than the diversity score at state average of 0.69. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1843 out of 3542 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
15-19%
27%
Reading/Language Arts Test Scores (% Proficient)
25-29%
30%
Science Test Scores (% Proficient)
60-64%
50%
Student-Teacher Ratio
15:1
13:1
American Indian
n/a
n/a
Asian
n/a
6%
Hispanic
3%
29%
Black
1%
16%
White
92%
45%
Hawaiian
n/a
n/a
Two or more races
4%
4%
All Ethnic Groups
Graduation Rate
85-89%
87%
Eligible for Free Lunch
29%
43%
Eligible for Reduced Lunch
12%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Frequently Asked Questions
What is Sullivan High School's ranking?
Sullivan High School is ranked #1843 out of 3,542 schools, which ranks it among the bottom 50% of public schools in Illinois.
What percent of students have achieved state testing proficiency in math and reading?
15-19% of students have achieved math proficiency (compared to the 27% IL state average), while 25-29% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Sullivan High School?
The graduation rate of Sullivan High School is 85-89%, which is lower than the Illinois state average of 87%.
How many students attend Sullivan High School?
317 students attend Sullivan High School.
What is the racial composition of the student body?
92% of Sullivan High School students are White, 4% of students are Two or more races, 3% of students are Hispanic, and 1% of students are Black.
What is the student-teacher ratio of Sullivan High School?
Sullivan High School has a student ration of 15:1, which is higher than the Illinois state average of 13:1.
What grades does Sullivan High School offer ?
Sullivan High School offers enrollment in grades 9-12
What school district is Sullivan High School part of?
Sullivan High School is part of Sullivan CUSD 300 School District.
School Reviews
Review Sullivan High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.
