For the 2025-26 school year, there are 14 public high schools serving 4,577 students in Lasalle County, IL.
The top ranked public high schools in Lasalle County, IL are Leland High School, La Salle-peru Twp High School and Mendota Twp High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Lasalle County, IL public high schools have an average math proficiency score of 17% (versus the Illinois public high school average of 26%), and reading proficiency score of 24% (versus the 29% statewide average). High schools in Lasalle County have an average ranking of 5/10, which is in the bottom 50% of Illinois public high schools.
Lasalle County, IL public high school have a Graduation Rate of 83%, which is less than the Illinois average of 87%.
The school with highest graduation rate is Seneca High School, with 90-94% graduation rate. Read more about public school graduation rate statistics in Illinois or national school graduation rate statistics.
Minority enrollment is 29% of the student body (majority Hispanic), which is less than the Illinois public high school average of 55% (majority Hispanic).
Best Public High Schools in Lasalle County (2025-26)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Leland High School
(Math: ≤20% | Reading: <50%)
Rank:
Rank:
7/
Top 50%10
370 N Main St
Leland, IL 60531
(815) 495-3231
Leland, IL 60531
(815) 495-3231
Gr: 9-12 | 85 students Student-teacher ratio: 9:1 Minority enrollment: 20%
Rank: #22.
La Salle-peru Twp High School
(Math: 19% | Reading: 27%)
Rank:
Rank:
5/
Bottom 50%10
541 Chartres St
La Salle, IL 61301
(815) 223-1721
La Salle, IL 61301
(815) 223-1721
Gr: 9-12 | 1,191 student Student-teacher ratio: 14:1 Minority enrollment: 32%
Rank: #33.
Mendota Twp High School
(Math: 20-24% | Reading: 20-24%)
Rank:
Rank:
5/
Bottom 50%10
2300 W Main St
Mendota, IL 61342
(815) 539-7446
Mendota, IL 61342
(815) 539-7446
Gr: 9-12 | 484 students Student-teacher ratio: 13:1 Minority enrollment: 48%
Rank: #44.
Ottawa Township High School
(Math: 17% | Reading: 25%)
Rank:
Rank:
5/
Bottom 50%10
211 E Main St
Ottawa, IL 61350
(815) 433-1323
Ottawa, IL 61350
(815) 433-1323
Gr: 9-12 | 1,270 student Student-teacher ratio: 14:1 Minority enrollment: 24%
Rank: #55.
Seneca High School
(Math: 15-19% | Reading: 20-24%)
Rank:
Rank:
5/
Bottom 50%10
307 E Scott St
Seneca, IL 61360
(815) 357-5000
Seneca, IL 61360
(815) 357-5000
Gr: 9-12 | 361 students Student-teacher ratio: 10:1 Minority enrollment: 13%
Rank: #66.
Woodland High School
(Math: 20-29% | Reading: 11-19%)
Rank:
Rank:
4/
Bottom 50%10
5800 E 3000 North Rd
Streator, IL 61364
(815) 672-2900
Streator, IL 61364
(815) 672-2900
Gr: 9-12 | 148 students Student-teacher ratio: 11:1 Minority enrollment: 11%
Rank: #77.
Serena High School
(Math: 11-19% | Reading: 20-29%)
Rank:
Rank:
4/
Bottom 50%10
2283 N 3812th Rd
Serena, IL 60549
(815) 496-2361
Serena, IL 60549
(815) 496-2361
Gr: 9-12 | 162 students Student-teacher ratio: 10:1 Minority enrollment: 13%
Rank: #88.
Earlville Jr/sr High School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
415 W Union St
Earlville, IL 60518
(815) 246-8361
Earlville, IL 60518
(815) 246-8361
Gr: 9-12 | 95 students Student-teacher ratio: 9:1 Minority enrollment: 18%
Rank: #99.
Streator Twp High School
(Math: 6-9% | Reading: 20-24%)
Rank:
Rank:
3/
Bottom 50%10
202 W Lincoln Ave
Streator, IL 61364
(815) 672-0545
Streator, IL 61364
(815) 672-0545
Gr: 9-12 | 781 students Student-teacher ratio: 14:1 Minority enrollment: 36%
Rank: n/an/a
La Salle-peru Area Career Center
Vocational School
200 9th St
Peru, IL 61354
(815) 223-2454
Peru, IL 61354
(815) 223-2454
Gr: 11-12
Rank: n/an/a
Lasalle Co Detention Center 9-12
Alternative School
707 Etna Rd
Ottawa, IL 61350
(815) 434-8300
Ottawa, IL 61350
(815) 434-8300
Gr: 9-12
Rank: n/an/a
Lmp Regional Office Of Education
Alternative School
119 W Madison St Ste 102
Ottawa, IL 61350
(815) 434-0780
Ottawa, IL 61350
(815) 434-0780
Gr: 4-12
Lasalle County 51³Ô¹ÏÍøºÚÁÏ (Closed)
School
Location
Quick Facts
297 N 33rd Rd
La Salle, IL 61301
(815) 223-2933
La Salle, IL 61301
(815) 223-2933
Gr: K-8 | 169 students Student-teacher ratio: 15:1 Minority enrollment: 10%
345 6th St
La Salle, IL 61301
(815) 223-0786
La Salle, IL 61301
(815) 223-0786
Gr: PK | 76 students Student-teacher ratio: 19:1 Minority enrollment: 46%
La Salle-peru Area Career Center (Closed 2013)
Vocational School
542 Chartres St
La Salle, IL 61301
(815) 223-2454
La Salle, IL 61301
(815) 223-2454
Gr: 11-12
Lasalle County Detention Home (Closed 2023)
Alternative School
707 E Etna Rd
Ottawa, IL 61350
(815) 434-8300
Ottawa, IL 61350
(815) 434-8300
Gr: 11-12 | 2 students
701 South Sterling St
Streator, IL 61364
(815) 672-2736
Streator, IL 61364
(815) 672-2736
Gr: K-5 | 291 students Student-teacher ratio: 14:1 Minority enrollment: 32%
R R 1
Streator, IL 61364
(815) 672-9113
Streator, IL 61364
(815) 672-9113
Gr: K-8 | 27 students
Po Box 107
Serena, IL 60549
(815) 496-9250
Serena, IL 60549
(815) 496-9250
Gr: K-8 | 139 students Student-teacher ratio: 11:1 Minority enrollment: 17%
Sheridan Correctional Center (Closed 2004)
Alternative School
Po Box 38
Sheridan, IL 60551
(815) 496-2311
Sheridan, IL 60551
(815) 496-2311
1206 E Elm St
Streator, IL 61364
(815) 672-3236
Streator, IL 61364
(815) 672-3236
Gr: K-4 | 279 students Student-teacher ratio: 17:1 Minority enrollment: 28%
Streator Alternative Ed Program High School (Closed 2014)
Alternative School
202 West Lincoln Ave
Streator, IL 61364
(815) 672-0545
Streator, IL 61364
(815) 672-0545
Gr: 9-12
Po Box 430
Utica, IL 61373
(815) 667-4790
Utica, IL 61373
(815) 667-4790
Gr: PK-8 | 54 students Minority enrollment: 2%
1325 Park Rd
Peru, IL 61354
(815) 223-0301
Peru, IL 61354
(815) 223-0301
Gr: 2-4 | 273 students Student-teacher ratio: 14:1 Minority enrollment: 27%
Frequently Asked Questions
What are the top ranked public high schools in Lasalle County, IL?
The top ranked public high schools in Lasalle County, IL include Leland High School, La Salle-peru Twp High School and Mendota Twp High School.
How many public high schools are located in Lasalle County?
14 public high schools are located in Lasalle County.
What is the racial composition of students in Lasalle County?
Lasalle County public high schools minority enrollment is 29% of the student body (majority Hispanic), which is less than the Illinois public high schools average of 55% (majority Hispanic).
Which public high schools in Lasalle County are often viewed compared to one another?
Popular comparisons of public high schools in Lasalle County include: Earlville Jr/sr High School vs. La Salle-peru Twp High School, La Salle-peru Twp High School vs. Ottawa Township High School, Streator Twp High School vs. La Salle-peru Twp High School
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