Thornwood High School is a public high school located in South Holland, Illinois, United States. It was built as part of Thornton Township High School District 205. It opened in 1971 to accommodate overcrowding at other District 205 schools, Thornridge High and Thornton Township High School.
Serving 1,868 students in grades 9-12, Thornwood 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 6% (which is lower than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 8% (which is lower than the Illinois state average of 30%).
The student-teacher ratio of 13:1 is equal to the Illinois state level of 13:1.
Minority enrollment is 98% of the student body (majority Black), which is higher than the Illinois state average of 55% (majority Hispanic and Black).
Quick Facts (2025-26)
- Grades: 9-12
- Enrollment: 1,868 students
- Student-Teacher Ratio: 13:1
- Minority Enrollment: 98%
- Graduation Rate: 88% (Top 50% in IL)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 6% (Btm 50%)
- Reading Proficiency: 8% (Btm 50%)
- Science Proficiency: 10% (Btm 50%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
School Overview
Thornwood High School's student population of 1,868 students has stayed relatively flat over five school years.
The teacher population of 141 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
1,868 students
Gender %
Total Classroom Teachers
141 teachers
Year Founded
1972
Colors
Navy Blue, Gold
School Calendar
School Motto
We build world-ready learners.
School Rankings
Thornwood 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 Thornwood High School is 0.31, 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
#3192 out of 3542 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
6%
27%
Reading/Language Arts Test Scores (% Proficient)
8%
30%
Science Test Scores (% Proficient)
10%
50%
Student-Teacher Ratio
13:1
13:1
American Indian
n/a
n/a
Asian
n/a
6%
Hispanic
14%
28%
Black
82%
17%
White
2%
45%
Hawaiian
n/a
n/a
Two or more races
2%
4%
All Ethnic Groups
Graduation Rate
88%
87%
Eligible for Free Lunch
8%
43%
Eligible for Reduced Lunch (19-20)
19%
2%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Thornwood High School's ranking?
Thornwood High School is ranked #3192 out of 3,542 schools, which ranks it among the bottom 50% of public schools in Illinois.
What schools are Thornwood High School often compared to?
Thornwood High Schoolis often viewed alongside schools like Thornton Fractnl So High School, Thornridge High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
6% of students have achieved math proficiency (compared to the 27% IL state average), while 8% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Thornwood High School?
The graduation rate of Thornwood High School is 88%, which is higher than the Illinois state average of 87%.
How many students attend Thornwood High School?
1,868 students attend Thornwood High School.
What is the racial composition of the student body?
82% of Thornwood High School students are Black, 14% of students are Hispanic, 2% of students are White, and 2% of students are Two or more races.
What is the student-teacher ratio of Thornwood High School?
Thornwood High School has a student ration of 13:1, which is equal to the Illinois state average of 13:1.
What grades does Thornwood High School offer ?
Thornwood High School offers enrollment in grades 9-12
What school district is Thornwood High School part of?
Thornwood High School is part of Thornton TWP HSD 205 School District.
School Reviews
1 4/7/2017
Thornwood was one of the BEST high schools in the country when I went there...... what happened?
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