Serving 462 students in grades 9-12, Williamsville High School ranks in the top 50% of all schools in Illinois for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 25-29% (which is approximately equal to the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 35-39% (which is higher than the Illinois state average of 30%).
The student-teacher ratio of 14:1 is higher than the Illinois state level of 13:1.
Minority enrollment is 8% of the student body (majority Hispanic and Black), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 462 students
- Student-Teacher Ratio: 14:1
- Minority Enrollment: 8%
- Graduation Rate: ≥95% (Top 10% in IL)
- Overall Testing Rank: Top 50%
- Math Proficiency: 25-29% (Top 50%)
- Reading Proficiency: 35-39% (Top 30%)
- Science Proficiency: 60-64% (Top 30%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
Top Rankings
Williamsville High School ranks among the top 20% of public schools in Illinois for:
Category
Attribute
Most improved public schools
Graduation Rate
School Overview
Williamsville High School's student population of 462 students has stayed relatively flat over five school years.
The teacher population of 33 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
462 students
Total Classroom Teachers
33 teachers
Year Founded
1905
Campus Size
50 acres
School Motto
Truth and Honor
School Rankings
Williamsville High School ranks within the top 50% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Williamsville High School is 0.15, 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
#1116 out of 3542 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
25-29%
27%
Reading/Language Arts Test Scores (% Proficient)
35-39%
30%
Science Test Scores (% Proficient)
60-64%
50%
Student-Teacher Ratio
14:1
13:1
American Indian
n/a
n/a
Asian
1%
6%
Hispanic
2%
29%
Black
1%
16%
White
92%
45%
Hawaiian
n/a
n/a
Two or more races
4%
4%
All Ethnic Groups
Graduation Rate
≥95%
87%
Eligible for Free Lunch
7%
43%
Eligible for Reduced Lunch (19-20)
2%
2%
School Statewide Testing
School District Name
Williamsville CUSD 15 School District
Source: National Center for Education Statistics (NCES), IL Dept. of Education
School Notes
- School Mascot: Wild Boars
Frequently Asked Questions
What is Williamsville High School's ranking?
Williamsville High School is ranked #1116 out of 3,542 schools, which ranks it among the top 50% of public schools in Illinois.
What schools are Williamsville High School often compared to?
Williamsville High Schoolis often viewed alongside schools like Glenwood High School, Rochester High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
25-29% of students have achieved math proficiency (compared to the 27% IL state average), while 35-39% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Williamsville High School?
The graduation rate of Williamsville High School is 95%, which is higher than the Illinois state average of 87%.
How many students attend Williamsville High School?
462 students attend Williamsville High School.
What is the racial composition of the student body?
92% of Williamsville High School students are White, 4% of students are Two or more races, 2% of students are Hispanic, 1% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Williamsville High School?
Williamsville High School has a student ration of 14:1, which is higher than the Illinois state average of 13:1.
What grades does Williamsville High School offer ?
Williamsville High School offers enrollment in grades 9-12
What school district is Williamsville High School part of?
Williamsville High School is part of Williamsville CUSD 15 School District.
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