Colby High School is a public secondary school located in Colby, Wisconsin. It is located on the Clark County border with Marathon County, and CHS serves about 300 students from both Clark and Marathon counties.
Serving 299 students in grades 9-12, Colby High School ranks in the bottom 50% of all schools in Wisconsin for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 10-14% (which is lower than the Wisconsin state average of 40%). The percentage of students achieving proficiency in reading/language arts is 25-29% (which is lower than the Wisconsin state average of 38%).
The student:teacher ratio of 17:1 is higher than the Wisconsin state level of 13:1.
Minority enrollment is 32% of the student body (majority Hispanic), which is lower than the Wisconsin state average of 33% (majority Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 299 students
- Student:Teacher Ratio: 17:1
- Minority Enrollment: 32%
- Graduation Rate: ≥95% (Top 10% in WI)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 10-14% (Btm 50%)
- Reading Proficiency: 25-29% (Btm 50%)
- Science Proficiency: 25-29% (Btm 50%)
- Source: National Center for Education Statistics (NCES), WI Dept. of Education
Top Rankings
Colby High School ranks among the top 20% of public schools in Wisconsin for:
Category
Attribute
Graduation Rate
School Overview
Colby High School's student population of 299 students has grown by 9% over five school years.
The teacher population of 18 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
299 students
Gender %
Total Classroom Teachers
18 teachers
School Calendar
First Day of School
Tue. Sep 2, 2025
School Rankings
Colby High School ranks within the bottom 50% of all 1,962 schools in Wisconsin (based off of combined math and reading proficiency testing data).
The diversity score of Colby High School is 0.46, which is less than the diversity score at state average of 0.53. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1662 out of 1962 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
10-14%
40%
Reading/Language Arts Test Scores (% Proficient)
25-29%
38%
Science Test Scores (% Proficient)
25-29%
44%
Student : Teacher Ratio
17:1
13:1
American Indian
n/a
1%
Asian
1%
4%
Hispanic
29%
14%
Black
1%
9%
White
68%
67%
Hawaiian
n/a
n/a
Two or more races
1%
5%
All Ethnic Groups
Graduation Rate
≥95%
90%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
42%
37%
Eligible for Reduced Lunch
11%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WI Dept. of Education
School Notes
- School Mascot: Hornet
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Colby High School's ranking?
Colby High School is ranked #1662 out of 1,962 schools, which ranks it among the bottom 50% of public schools in Wisconsin.
What schools are Colby High School often compared to?
Colby High Schoolis often viewed alongside schools like Abbotsford Middle/senior High School, Mosinee High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
10-14% of students have achieved math proficiency (compared to the 40% WI state average), while 25-29% of students have achieved reading proficiency (compared to the 38% WI state average).
What is the graduation rate of Colby High School?
The graduation rate of Colby High School is 95%, which is higher than the Wisconsin state average of 90%.
How many students attend Colby High School?
299 students attend Colby High School.
What is the racial composition of the student body?
68% of Colby High School students are White, 29% of students are Hispanic, 1% of students are Asian, 1% of students are Black, and 1% of students are Two or more races.
What is the student:teacher ratio of Colby High School?
Colby High School has a student ration of 17:1, which is higher than the Wisconsin state average of 13:1.
What grades does Colby High School offer ?
Colby High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Colby High School part of?
Colby High School is part of Colby School District.
School Reviews
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