Lemont Twp High School (Ranked Top 20% for 2025-26)

Lemont Twp High School

800 Porter St
Lemont, IL 60439

( shown in map)

Top 20%

Serving 1,305 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 is 47% (which is higher than the Illinois state average of 27%). The percentage of students achieving 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 21% of the student body (majority Hispanic), which is lower than the Illinois state average of 55% (majority Hispanic).

Quick Facts (2025-26)

Grades: 9-12
Enrollment: 1,305 students
Student-Teacher Ratio: 15:1
Minority Enrollment: 21%
: 96% (Top 5% in IL)
: Top 20%
: 47% (Top 20%)
: 47% (Top 20%)
: 74% (Top 20%)
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:

School Overview

Lemont Twp High School's student population of 1,305 students has stayed relatively flat over five school years.

The teacher population of 89 teachers has declined by 6% over five school years.

Awards

Blue Ribbon School - Selected in 2017

Grades Offered

Grades 9-12

View Data

Distribution of Students By Grade Trends
Grade	Lemont Twp High School
9	317
10	300
11	337
12	351

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Total Students

1,305 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Lemont Twp High School
2023	1,324
2022	1,370
2021	1,405
2020	1,373
2019	1,373
2018	1,361
2017	1,361
2016	1,377
2015	1,407
2014	1,405
2013	1,461
2012	1,495
2011	1,427
2010	1,501
2009	1,478
2008	1,452
2007	1,418
2006	991
2005	1,282
2004	1,241
2003	1,132
2002	1,042
2001	978
2000	909
1999	851
1998	840
1997	827
1996	781
1995	778
1994	742
1993	661
1992	634
1991	584
1990	568
1989	566
1988	590
1987	605

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Gender %

Total Classroom Teachers

89 teachers

View Data

Total Classroom Teachers Trends Over Years (1990-2023)
Year	Lemont Twp High School
2023	91
2022	96
2020	95
2019	95
2018	90
2017	90
2016	90
2015	91
2012	92
2011	94
2010	96
2009	99
2008	87
2007	91
2006	82
2005	83
2004	78
2003	73
2002	68
2001	64
2000	55
1999	53
1998	52
1997	50
1996	48
1995	47
1994	45
1993	40
1992	40
1991	39
1990	38

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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 of Lemont Twp High School is 0.36, 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.

This School

State Level (IL)

#481 out of 3542 schools
(Top 20%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Lemont Twp High School
2023	#481
2022	#420
2021	#540
2019	#520
2018	#350
2017	#256
2016	#307
2015	#228
2014	#755
2013	#762
2012	#2851

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47%

27%

View Data

Math Proficiency Comparison Over Years (2011-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	47%	27%	47%
2021	46%	28%	46%
2019	51%	33%	51%
2018	56%	32%	55%
2017	60%	32%	60%
2016	57%	31%	57%
2015	70%	29%	70%
2014	72%	59%	72%
2013	71%	58%	71%
2012	69%	80%	69%
2011	72%	80%	72%

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47%

30%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2022	47%	30%	47%
2021	47%	32%	47%
2019	56%	38%	56%
2018	60%	37%	55%
2017	62%	38%	62%
2016	60%	36%	60%
2015	58%	38%	58%
2014	71%	57%	71%
2013	74%	58%	74%
2012	63%	75%	63%
2011	73%	75%	73%

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74%

50%

Student-Teacher Ratio

15:1

13:1

View Data

Student-Teacher Ratio Comparison Over Years (1990-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	15:1	14:1	15:1
2022	14:1	14:1	14:1
2020	14:1	15:1	14:1
2019	14:1	15:1	14:1
2018	15:1	16:1	15:1
2017	15:1	15:1	15:1
2016	15:1	16:1	15:1
2015	15:1	16:1	15:1
2012	16:1	16:1	16:1
2011	15:1	16:1	15:1
2010	16:1	16:1	16:1
2009	15:1	16:1	15:1
2008	17:1	18:1	17:1
2007	16:1	17:1	16:1
2006	12:1	16:1	12:1
2005	15:1	16:1	15:1
2004	16:1	17:1	16:1
2003	16:1	16:1	16:1
2002	15:1	16:1	15:1
2001	15:1	16:1	15:1
2000	17:1	16:1	17:1
1999	16:1	16:1	16:1
1998	16:1	17:1	16:1
1997	17:1	17:1	17:1
1996	16:1	17:1	16:1
1995	17:1	17:1	17:1
1994	16:1	18:1	16:1
1993	16:1	18:1	17:1
1992	16:1	17:1	16:1
1991	15:1	17:1	15:1
1990	15:1	18:1	15:1

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American Indian

n/a

Asian

View Data

Asian Student Percentage Comparison Over Years (1991-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	5%	6%	5%
2022	5%	5%	5%
2021	5%	5%	5%
2020	5%	5%	5%
2019	5%	5%	5%
2018	5%	5%	5%
2017	5%	5%	5%
2016	5%	5%	5%
2015	4%	6%	4%
2014	3%	5%	3%
2013	3%	5%	3%
2012	2%	4%	2%
2011	3%	5%	3%
2010	4%	5%	4%
2009	3%	5%	3%
2008	3%	5%	3%
2007	2%	5%	2%
2005	2%	5%	2%
2004	1%	4%	1%
2003	3%	4%	3%
2002	3%	4%	3%
2001	2%	4%	2%
2000	2%	3%	2%
1998	1%	3%	1%
1997	1%	3%	1%
1996	1%	3%	1%
1995	2%	3%	2%
1994	1%	3%	1%
1993	1%	3%	1%
1992	2%	3%	2%
1991	1%	3%	1%

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Hispanic

12%

28%

View Data

Hispanic Student Percentage Comparison Over Years (1991-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	12%	27%	12%
2022	11%	27%	11%
2021	11%	27%	11%
2020	11%	26%	11%
2019	11%	26%	11%
2018	11%	26%	11%
2017	11%	26%	11%
2016	11%	26%	11%
2015	10%	25%	10%
2014	9%	25%	9%
2013	9%	24%	9%
2012	10%	24%	10%
2011	9%	23%	9%
2010	6%	22%	6%
2009	7%	22%	7%
2008	7%	21%	7%
2007	7%	20%	7%
2006	6%	19%	5%
2005	5%	18%	5%
2004	5%	18%	5%
2003	5%	17%	5%
2002	5%	16%	5%
2001	5%	15%	5%
2000	4%	15%	4%
1999	3%	14%	3%
1998	2%	13%	2%
1997	2%	13%	2%
1996	2%	12%	2%
1995	2%	12%	2%
1994	2%	11%	2%
1993	3%	11%	3%
1992	2%	10%	2%
1991	1%	10%	1%

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Black

16%

View Data

Black Student Percentage Comparison Over Years (2007-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	1%	17%	1%
2022	1%	17%	1%
2021	1%	17%	1%
2020	1%	17%	1%
2019	1%	17%	1%
2018	1%	17%	1%
2017	1%	17%	1%
2016	1%	17%	1%
2015	1%	17%	1%
2014	2%	17%	2%
2013	1%	18%	1%
2012	1%	18%	1%
2011	1%	18%	1%
2010	2%	20%	2%
2009	2%	20%	2%
2008	1%	20%	1%
2007	1%	20%	1%

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White

79%

45%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	79%	45%	79%
2022	80%	47%	80%
2021	81%	47%	81%
2020	81%	48%	81%
2019	81%	48%	81%
2018	82%	49%	82%
2017	82%	49%	82%
2016	82%	49%	82%
2015	84%	49%	84%
2014	84%	50%	84%
2013	85%	50%	85%
2012	86%	51%	86%
2011	86%	51%	86%
2010	88%	53%	88%
2009	88%	53%	88%
2008	89%	54%	89%
2007	90%	55%	90%
2006	98%	56%	97%
2005	93%	57%	93%
2004	93%	57%	93%
2003	92%	58%	92%
2002	92%	59%	92%
2001	93%	60%	93%
2000	94%	61%	94%
1999	97%	62%	97%
1998	97%	63%	97%
1997	97%	64%	97%
1996	97%	64%	97%
1995	96%	65%	96%
1994	97%	65%	97%
1993	96%	65%	96%
1992	96%	66%	96%
1991	98%	66%	98%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	3%	4%	3%
2022	3%	4%	3%
2021	2%	4%	2%
2020	2%	4%	2%
2019	2%	4%	2%
2018	1%	3%	1%
2017	1%	3%	1%
2016	1%	3%	1%
2015	1%	3%	1%
2014	2%	3%	2%
2013	2%	3%	2%

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All Ethnic Groups

0.36

0.70

View Data

Diversity Score Comparison Over Years (1992-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	0.36	0.70	0.36
2022	0.35	0.68	0.35
2021	0.33	0.68	0.33
2020	0.33	0.68	0.33
2019	0.33	0.68	0.33
2018	0.32	0.67	0.32
2017	0.32	0.67	0.32
2016	0.32	0.67	0.32
2015	0.29	0.67	0.29
2014	0.29	0.66	0.29
2013	0.27	0.66	0.27
2012	0.25	0.65	0.25
2011	0.25	0.66	0.25
2010	0.24	0.64	0.21
2009	0.22	0.64	0.22
2008	0.20	0.64	0.20
2007	0.19	0.63	0.19
2005	0.13	0.61	0.13
2004	0.12	0.60	0.13
2003	0.15	0.59	0.15
2002	0.15	0.59	0.15
2001	0.13	0.58	0.13
2000	0.11	0.57	0.12
1999	0.06	0.56	0.06
1998	0.06	0.56	0.06
1997	0.06	0.54	0.06
1996	0.06	0.53	0.06
1995	0.08	0.53	0.08
1994	0.06	0.52	0.06
1993	0.08	0.52	0.08
1992	0.08	0.52	0.08

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96%

87%

View Data

Graduation Rate Comparison Over Years (2011-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	96%	87%	96%
2022	93%	87%	93%
2018	97%	87%	97%
2017	93%	87%	93%
2016	96%	85%	96%
2015	95%	85%	95%
2014	94%	86%	94%
2013	96%	83%	96%
2012	97%	82%	97%
2011	91%	83%	91%

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Eligible for

11%

43%

View Data

Free Lunch Eligibility Comparison Over Years (2003-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	11%	43%	11%
2022	10%	43%	10%
2021	10%	44%	10%
2020	12%	47%	12%
2019	12%	47%	12%
2018	10%	46%	10%
2017	10%	46%	10%
2016	9%	47%	9%
2015	13%	52%	13%
2014	8%	47%	8%
2013	7%	45%	7%
2012	3%	21%	3%
2011	6%	39%	6%
2010	3%	37%	3%
2009	3%	33%	3%
2008	3%	32%	3%
2007	3%	32%	3%
2006	3%	32%	3%
2005	2%	32%	2%
2004	1%	31%	1%
2003	2%	30%	2%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2002-2023)
Year	Lemont Twp High School	Illinois	Lemont Township High School District 210
2023	2%	4%	2%
2022	2%	4%	2%
2021	2%	4%	2%
2018	2%	4%	2%
2017	2%	4%	2%
2016	1%	3%	1%
2015	1%	2%	1%
2014	1%	3%	1%
2013	3%	5%	3%
2012	4%	27%	4%
2011	1%	5%	1%
2010	1%	6%	1%
2009	1%	6%	1%
2008	1%	6%	1%
2007	1%	6%	1%
2005	1%	5%	1%
2004	1%	5%	1%
2003	1%	5%	1%
2002	1%	5%	1%

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School Statewide Testing

School District Name

Lemont Township High School District 210

Source: National Center for Education Statistics (NCES), IL Dept. of Education

Profile last updated: 02/09/2025

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%.

How many students attend Lemont Twp High School?

1,305 students attend Lemont Twp High School.

What is the racial composition of the student body?

79% of Lemont Twp High School students are White, 12% of students are Hispanic, 5% 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 Township High School District 210.

School Reviews

5 5/1/2020

Lemont high school is truly a home away from home.

- Posted by Student/Alumni - _

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Quick Facts (2025-26)

Grades: 9-12
Enrollment: 1,305 students
Student-Teacher Ratio: 15:1
Minority Enrollment: 21%
: 96% (Top 5%)
: Top 20%
: 47% (Top 20%)
: 47% (Top 20%)
: 74% (Top 20%)
Source: National Center for Education Statistics (NCES), IL Dept. of Education