Waterloo High School is a high school in Waterloo, Illinois, and is the only public high school in the Waterloo area.
Serving 876 students in grades 9-12, Waterloo High School ranks in the top 30% of all schools in Illinois for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 40% (which is higher than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 39% (which is higher than the Illinois state average of 30%).
The student-teacher ratio of 17:1 is higher than the Illinois state level of 13:1.
Minority enrollment is 7% of the student body (majority Hispanic), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 876 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 7%
- Graduation Rate: 93% (Top 20% in IL)
- Overall Testing Rank: Top 30%
- Math Proficiency: 40% (Top 30%)
- Reading Proficiency: 39% (Top 30%)
- Science Proficiency: 67% (Top 20%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
Top Rankings
Waterloo High School ranks among the top 20% of public schools in Illinois for:
Category
Attribute
Most improved public schools
Science Proficiency
Graduation Rate
School Overview
Waterloo High School's student population of 876 students has stayed relatively flat over five school years.
The teacher population of 51 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
876 students
Total Classroom Teachers
51 teachers
Year Founded
1895
School Calendar
School Rankings
Waterloo High School ranks within the top 30% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Waterloo High School is 0.13, 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
#828 out of 3542 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
40%
27%
Reading/Language Arts Test Scores (% Proficient)
39%
30%
Science Test Scores (% Proficient)
67%
50%
Student-Teacher Ratio
17:1
13:1
American Indian
n/a
n/a
Asian
n/a
6%
Hispanic
3%
29%
Black
n/a
16%
White
93%
45%
Hawaiian
n/a
n/a
Two or more races
4%
4%
All Ethnic Groups
Graduation Rate
93%
87%
Eligible for Free Lunch
13%
43%
Eligible for Reduced Lunch
7%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
School Notes
- School Mascot: Bulldogs
Frequently Asked Questions
What is Waterloo High School's ranking?
Waterloo High School is ranked #828 out of 3,542 schools, which ranks it among the top 30% of public schools in Illinois.
What schools are Waterloo High School often compared to?
Waterloo High Schoolis often viewed alongside schools like Belleville High School-west, Columbia High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
40% of students have achieved math proficiency (compared to the 27% IL state average), while 39% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Waterloo High School?
The graduation rate of Waterloo High School is 93%, which is higher than the Illinois state average of 87%.
How many students attend Waterloo High School?
876 students attend Waterloo High School.
What is the racial composition of the student body?
93% of Waterloo High School students are White, 4% of students are Two or more races, and 3% of students are Hispanic.
What is the student-teacher ratio of Waterloo High School?
Waterloo High School has a student ration of 17:1, which is higher than the Illinois state average of 13:1.
What grades does Waterloo High School offer ?
Waterloo High School offers enrollment in grades 9-12
What school district is Waterloo High School part of?
Waterloo High School is part of Waterloo CUSD 5 School District.
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