Colusa High School is a public high school located in Colusa, Colusa County, California, United States. In August 2010, it was featured on the MTV series If You Really Knew Me. Colusa Grammar School and Colusa High School and Grounds are both listed on the National Register of Historic Places.
Serving 431 students in grades 9-12, Colusa High School ranks in the bottom 50% of all schools in California for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 15-19% (which is lower than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 50-54% (which is higher than the California state average of 47%).
The student-teacher ratio of 20:1 is lower than the California state level of 21:1.
Minority enrollment is 82% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 431 students
- Student-Teacher Ratio: 20:1
- Minority Enrollment: 82%
- Graduation Rate: ≥95% (Top 20% in CA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 15-19% (Btm 50%)
- Reading Proficiency: 50-54% (Top 50%)
- Science Proficiency: 20-24% (Btm 50%)
- Attendance Zone: Colusa High's attendance zone encompasses the entire school district, covering approximately 145.2 square miles in Colusa, CA. The typical drive to the school ranges from 15 to 20 minutes, with the furthest edge of the zone located about 14.5 miles away.
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Colusa High School ranks among the top 20% of public schools in California for:
Category
Attribute
Graduation Rate
School Overview
Colusa High School's student population of 431 students has grown by 7% over five school years.
The teacher population of 22 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
431 students
Showing 2015–2025. Full 39-year historical data available below ↓
Total Classroom Teachers
22 teachers
Showing 2014–2025. Full 39-year historical data available below ↓
School Rankings
Colusa High School ranks within the bottom 50% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Colusa High School is 0.41, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#5050 out of 9523 schools
(Bottom 50%)
(Bottom 50%)
Showing 2013–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
15-19%
34%
Showing 2013–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
50-54%
47%
Showing 2012–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
20-24%
29%
Student-Teacher Ratio
20:1
21:1
Showing 2014–2025. Full 39-year historical data available below ↓
American Indian
2%
1%
Showing 2014–2025. Full 38-year historical data available below ↓
Asian
1%
12%
Showing 2015–2025. Full 38-year historical data available below ↓
Hispanic
75%
56%
Showing 2015–2025. Full 38-year historical data available below ↓
Black
1%
5%
Showing 2011–2025. Full 37-year historical data available below ↓
White
18%
20%
Showing 2015–2025. Full 38-year historical data available below ↓
Hawaiian
1%
n/a
Two or more races
2%
6%
All Ethnic Groups
Showing 2015–2025. Full 38-year historical data available below ↓
Graduation Rate
≥95%
86.2%
Showing 2014–2023. Full 13-year historical data available below ↓
Chronically Absent Students
(22-23)21.1%
27.7%
Eligible for Free Lunch
52%
54%
Showing 2015–2025. Full 34-year historical data available below ↓
Eligible for Reduced Lunch
15%
8%
Showing 2015–2025. Full 27-year historical data available below ↓
School Statewide Testing
School District Name
Sports
School Mascot
Robbie The Redhawk
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Colusa High School's ranking?
Colusa High School is ranked #5050 out of 9,523 schools, which ranks it among the bottom 50% of public schools in California.
What percent of students have achieved state testing proficiency in math and reading?
15-19% of students have achieved math proficiency (compared to the 34% CA state average), while 50-54% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Colusa High School?
The graduation rate of Colusa High School is 95%, which is higher than the California state average of 86.2%.
How many students attend Colusa High School?
431 students attend Colusa High School.
What is the racial composition of the student body?
75% of Colusa High School students are Hispanic, 18% of students are White, 2% of students are American Indian, 2% of students are Two or more races, 1% of students are Asian, 1% of students are Black, and 1% of students are Hawaiian.
What is the student-teacher ratio of Colusa High School?
Colusa High School has a student ration of 20:1, which is lower than the California state average of 21:1.
What grades does Colusa High School offer ?
Colusa High School offers enrollment in grades 9-12
What school district is Colusa High School part of?
Colusa High School is part of Colusa Unified School District.
School Calendar
View the Colusa High School yearly calendar below. Note key dates such as:
Event
Date
Thanksgiving Break
November 25, 2026 (Wednesday)
School Reviews
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