Lemont Twp High School
Lemont, IL · High School · Grades 9-12
Lemont Twp High School is a high school in Lemont, IL with 1,324 students enrolled and a 73% proficiency rate. Part of Lemont Twp HSD 210. NCES data from the U.S. Department of Education.
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About This School
Lemont Twp High School is a high school located in Lemont, Illinois. The school serves 1,324 students in grades 9-12. The student-to-teacher ratio is 14.5:1.
According to EDFacts assessment data, 73% of students meet grade-level proficiency standards in combined math and reading. The school reports a 78% graduation rate.
14% of students qualify for free or reduced-price lunch.
Lemont Twp High School is part of the Lemont Twp HSD 210 in Illinois.
How This School Compares
Lemont Twp High School has 1,324 students enrolled, making it smaller than the average school in Lemont Twp HSD 210 (1,324 students). Its 73% proficiency rate is 0 percentage points above the district average of 73%. Compared to the Illinois state average of 48%, the school performs 24 points higher. With a 14.5:1 student-teacher ratio, it offers smaller class sizes than the national average.
Frequently Asked Questions
Lemont Twp High School has 1,324 students enrolled in grades 9-12. The student-to-teacher ratio is 14.5:1.
According to EDFacts data, 73% of students at Lemont Twp High School meet grade-level proficiency standards in combined math and reading assessments.
Lemont Twp High School has a 78% graduation rate, measuring the percentage of students who graduate within four years.
Lemont Twp High School is part of the Lemont Twp HSD 210 in Lemont, Illinois. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
For this entity, the underlying data on this page comes from NCES Common Core of Data and EDFacts. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
The methodology behind every numeric value on this page is publicly documented on the NCES Common Core of Data and EDFacts portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. public schools and districts. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: NCES Common Core of Data, 2026.