Serving 1,284 students in grades 9-12, Lemont Twp High School ranks in the top 20% of all schools in Illinois for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is 47% (which is higher than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 47% (which is higher 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 20% of the student body (majority Hispanic), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 1,284 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 20%
- Graduation Rate: 96% (Top 5% in IL)
- Overall Testing Rank: Top 20%
- Math Proficiency: 47% (Top 20%)
- Reading Proficiency: 47% (Top 20%)
- Science Proficiency: 74% (Top 20%)
- Attendance Zone: Lemont Twp High School's attendance zone encompasses the entire school district, covering approximately 31 square miles in Lemont, IL. Most families can expect a typical drive of 10-12 minutes to the school, with the zone's furthest edge located about 4.9 miles away.
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
Top Rankings
Lemont Twp High School ranks among the top 20% of public schools in Illinois for:
Category
Attribute
Overall Rank
Most improved public schools
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
School Overview
Lemont Twp High School's student population of 1,284 students has declined by 8% over five school years.
The teacher population of 85 teachers has declined by 10% over five school years.
Grades Offered
Grades 9-12
Total Students
1,284 students
Showing 2016–2025. Full 39-year historical data available below ↓
Total Classroom Teachers
85 teachers
Showing 2015–2025. Full 39-year historical data available below ↓
Campus Size
30 acres
School Rankings
Lemont Twp High School ranks within the top 20% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Lemont Twp High School is 0.35, which is less than the diversity score at state average of 0.70. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#481 out of 3542 schools
(Top 20%)
(Top 20%)
Showing 2013–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
47%
27%
Showing 2012–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
47%
30%
Showing 2012–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
74%
50%
Student-Teacher Ratio
15:1
13:1
Showing 2015–2025. Full 39-year historical data available below ↓
Asian
4%
6%
Showing 2016–2025. Full 38-year historical data available below ↓
Hispanic
12%
29%
Showing 2016–2025. Full 38-year historical data available below ↓
Black
1%
16%
Showing 2016–2025. Full 22-year historical data available below ↓
White
80%
45%
Showing 2016–2025. Full 38-year historical data available below ↓
Two or more races
3%
4%
Showing 2016–2025. Full 15-year historical data available below ↓
All Ethnic Groups
Showing 2016–2025. Full 38-year historical data available below ↓
Graduation Rate
96%
87.6%
Chronically Absent Students
(22-23)23.5%
29.7%
Eligible for Free Lunch
11%
43%
Showing 2015–2025. Full 24-year historical data available below ↓
Eligible for Reduced Lunch
2%
4%
Showing 2010–2025. Full 24-year historical data available below ↓
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Profile last updated:
Frequently Asked Questions
What is Lemont Twp High School's ranking?
Lemont Twp High School is ranked #481 out of 3,542 schools, which ranks it among the top 20% of public schools in Illinois.
What percent of students have achieved state testing proficiency in math and reading?
47% of students have achieved math proficiency (compared to the 27% IL state average), while 47% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Lemont Twp High School?
The graduation rate of Lemont Twp High School is 96%, which is higher than the Illinois state average of 87.6%.
How many students attend Lemont Twp High School?
1,284 students attend Lemont Twp High School.
What is the racial composition of the student body?
80% of Lemont Twp High School students are White, 12% of students are Hispanic, 4% of students are Asian, 3% of students are Two or more races, and 1% of students are Black.
What is the student-teacher ratio of Lemont Twp High School?
Lemont Twp High School has a student ration of 15:1, which is higher than the Illinois state average of 13:1.
What grades does Lemont Twp High School offer ?
Lemont Twp High School offers enrollment in grades 9-12
What school district is Lemont Twp High School part of?
Lemont Twp High School is part of Lemont TWP HSD 210 School District.
School Reviews
5 10/10/2025
Lemont high school is truly a home away from home.
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