List your school
Public SchoolHigh

Centennial High School

12400 West McMillan Road, Boise, ID 83713

BSchola Grade
Directions Call
Grades
9–12
High
Students
1,743
Enrolled 2024–25
Students per teacher
20.3 : 1
Full-time teachers
District
Joint School District No. 2
Ada County

Schola Grade B · Above average

Letter grade (A–F) · compared with 134 Idaho high schools · How we grade
Test scores57% proficient in math & reading
81stpercentile
Equity30% of low-income students proficient
45thpercentile
Attendance20% chronically absent
33rdpercentile
Graduation rate90% graduate in 4 years
56thpercentile
College readinessAt least 51% take AP, IB or dual-enrollment courses
89thpercentile
Class size20.3 students per teacher
22ndpercentile

Percentiles compare this school with other Idaho high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Centennial High School

Centennial High School is a public high school in Boise, Idaho, serving grades 9–12. It is part of Joint School District No. 2. The school is located in a midsize city in Ada County.

In the 2024–25 school year, 1,743 students were enrolled, with about 20.3 students for every full-time teacher. That ratio is larger than the typical Idaho high school (15.4 students per teacher). Its Schola Grade is B (above average), compared with 134 Idaho high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

12400 West McMillan Road
Boise, ID 83713
Open in Google Maps

School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
1,743 students
Students per teacher
20.3 to 1
AP courses offered
14
Charter school
No
Magnet school
No
Locale
City — Midsize
School district
Joint School District No. 2
County
Ada County
NCES school ID
160210000674

Schools near Centennial High School

All 101 schools in Boise →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.