Hillsboro High School is a coed public high school located in Hillsboro, Illinois, the county seat of Montgomery County, Illinois, in the United States. HHS is part of the Hillsboro Community Unit School District 3.
Serving 419 students in grades 9-12, Hillsboro High School ranks in the bottom 50% of all schools in Illinois for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 6-9% (which is lower than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 20-24% (which is lower than the Illinois state average of 30%).
The student-teacher ratio of 11:1 is lower than the Illinois state level of 13:1.
Minority enrollment is 6% 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: 419 students
- Student-Teacher Ratio: 11:1
- Minority Enrollment: 6%
- Graduation Rate: 85-89% (Top 50% in IL)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 6-9% (Btm 50%)
- Reading Proficiency: 20-24% (Btm 50%)
- Science Proficiency: 50-54% (Top 50%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
School Overview
Hillsboro High School's student population of 419 students has declined by 11% over five school years.
The teacher population of 38 teachers has grown by 18% over five school years.
Grades Offered
Grades 9-12
Total Students
419 students
Total Classroom Teachers
38 teachers
Year Founded
1921
School Calendar
School Rankings
Hillsboro High School ranks within the bottom 50% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Hillsboro High School is 0.12, 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
#2555 out of 3542 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
6-9%
27%
Reading/Language Arts Test Scores (% Proficient)
20-24%
30%
Science Test Scores (% Proficient)
50-54%
50%
Student-Teacher Ratio
11:1
13:1
American Indian
n/a
n/a
Asian
n/a
6%
Hispanic
3%
29%
Black
1%
16%
White
94%
45%
Hawaiian
n/a
n/a
Two or more races
2%
4%
All Ethnic Groups
Graduation Rate
85-89%
87%
Eligible for Free Lunch
39%
43%
Eligible for Reduced Lunch
12%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Frequently Asked Questions
What is Hillsboro High School's ranking?
Hillsboro High School is ranked #2555 out of 3,542 schools, which ranks it among the bottom 50% of public schools in Illinois.
What schools are Hillsboro High School often compared to?
Hillsboro High Schoolis often viewed alongside schools like Litchfield Senior High School, Lincolnwood High School, Nokomis Jr/sr High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
6-9% of students have achieved math proficiency (compared to the 27% IL state average), while 20-24% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Hillsboro High School?
The graduation rate of Hillsboro High School is 85-89%, which is lower than the Illinois state average of 87%.
How many students attend Hillsboro High School?
419 students attend Hillsboro High School.
What is the racial composition of the student body?
94% of Hillsboro High School students are White, 3% of students are Hispanic, 2% of students are Two or more races, and 1% of students are Black.
What is the student-teacher ratio of Hillsboro High School?
Hillsboro High School has a student ration of 11:1, which is lower than the Illinois state average of 13:1.
What grades does Hillsboro High School offer ?
Hillsboro High School offers enrollment in grades 9-12
What school district is Hillsboro High School part of?
Hillsboro High School is part of Hillsboro CUSD 3 School District.
School Reviews
Review Hillsboro High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.
