Centennial High School is a four-year public secondary school in Boise, Idaho. Although located in Boise, it is part of the West Ada School District; at the time of its construction, CHS was in unincorporated Ada County.
Serving 1,743 students in grades 9-12, Centennial High School ranks in the top 20% of all schools in Idaho for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 48% (which is higher than the Idaho state average of 41%). The percentage of students achieving proficiency in reading/language arts is 72% (which is higher than the Idaho state average of 55%).
The student-teacher ratio of 20:1 is higher than the Idaho state level of 17:1.
Minority enrollment is 26% of the student body (majority Hispanic), which is lower than the Idaho state average of 28% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 1,743 students
- Student-Teacher Ratio: 20:1
- Minority Enrollment: 26%
- Graduation Rate: 90% (Top 30% in ID)
- Overall Testing Rank: Top 20%
- Math Proficiency: 48% (Top 50%)
- Reading Proficiency: 72% (Top 20%)
- Science Proficiency: 53% (Top 20%)
- Source: National Center for Education Statistics (NCES), ID Dept. of Education
Top Rankings
Centennial High School ranks among the top 20% of public schools in Idaho for:
Category
Attribute
Overall Rank
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Centennial High School's student population of 1,743 students has declined by 6% over five school years.
The teacher population of 86 teachers has declined by 5% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,743 students
Total Classroom Teachers
86 teachers
Year Founded
1987
Colors
Maroon, Silver
School Calendar
School Motto
'Preparing Today’s Students for Tomorrow’s Challenges.'
School Rankings
Centennial High School ranks within the top 20% of all 704 schools in Idaho (based off of combined math and reading proficiency testing data).
The diversity score of Centennial High School is 0.43, which is less than the diversity score at state average of 0.44. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#135 out of 704 schools
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
48%
41%
Reading/Language Arts Test Scores (% Proficient)
72%
55%
Science Test Scores (% Proficient)
53%
41%
Student-Teacher Ratio
20:1
17:1
American Indian
n/a
1%
Asian
4%
1%
Hispanic
13%
21%
Black
4%
1%
White
74%
72%
Hawaiian
n/a
n/a
Two or more races
5%
4%
All Ethnic Groups
Graduation Rate
90%
80%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
25%
32%
Eligible for Reduced Lunch
5%
7%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), ID Dept. of Education
School Notes
- School Mascot: Patriot
Frequently Asked Questions
What is Centennial High School's ranking?
Centennial High School is ranked #135 out of 704 schools, which ranks it among the top 20% of public schools in Idaho.
What schools are Centennial High School often compared to?
Centennial High Schoolis often viewed alongside schools like Rocky Mountain High School, Mountain View High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
48% of students have achieved math proficiency (compared to the 41% ID state average), while 72% of students have achieved reading proficiency (compared to the 55% ID state average).
What is the graduation rate of Centennial High School?
The graduation rate of Centennial High School is 90%, which is higher than the Idaho state average of 80%.
How many students attend Centennial High School?
1,743 students attend Centennial High School.
What is the racial composition of the student body?
74% of Centennial High School students are White, 13% of students are Hispanic, 5% of students are Two or more races, 4% of students are Asian, and 4% of students are Black.
What is the student-teacher ratio of Centennial High School?
Centennial High School has a student ration of 20:1, which is higher than the Idaho state average of 17:1.
What grades does Centennial High School offer ?
Centennial High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Centennial High School part of?
Centennial High School is part of Joint School District No. 2.
In what neighborhood is Centennial High School located?
Centennial High School is located in the West Boise neighborhood of Boise, ID. There are 20 other public schools located in West Boise.
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