Enrollment
1,170
Idaho · 2024-25 NCES data
High school (grades 9-12) · Boise, ID
Capital Senior High School
Federal NCES profile for Capital Senior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 55/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 160036000047
👥 S:T ratio 35
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 53
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Capital Senior High School earns 55/100 on the Resource Investment Index, with class sizes near the Idaho median. It is also one of the largest schools in Idaho.
- #3 of 7
- high schools in Boise · Resource Index
- 55
- Resource Index · Higher
- 16.3:1
- students per teacher
- 20.8%
- free-lunch eligible
Capital Senior High School has class sizes near the Idaho median. Computed live against every Idaho school reporting to NCES.
By Resource Investment Index, Capital Senior High School ranks #3 of 7 high schools in Boise, ID.
School address
District: Boise Independent District · Idaho
NCES ID 160036000047 Verify on NCES CCD record →
Teachers (FTE)
72.0
Federal CCD staff survey
Students per teacher
16.3:1
vs 17.1:1 Idaho avg
-5% vs state
Free-lunch eligible
20.8%
vs 29.3% Idaho avg
-29% vs state
Student-teacher ratio in context
How Capital Senior High School compares with Idaho and U.S. medians
What stands out at Capital Senior High School
Capital Senior High School is a large high school in Boise, Idaho, enrolling 1,170 students.
At 16.3:1, its student-teacher ratio sits close to the Idaho median, within a few percentage points of the 17.1:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 20.8% of students eligible for free meals.
By headcount it is one of the larger campuses in Idaho, bigger than 95% of state schools at 1,170 students.
Its Resource Investment Index sits near the middle of the pack among 775 scored Idaho schools.
Against 67 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #20.
Its student body is led by White (59%) and Hispanic or Latino (25%), more mixed than most schools in the state (diversity index 58/100).
On the academic-pipeline side it reports 24 Advanced Placement courses.
Counselor coverage is strong, about 234 students per counselor, inside the American School Counselor Association's recommended 250:1.
Boise Independent District also operates Boise Senior High School (1,512 students) and Borah Senior High School (1,308 students) alongside Capital Senior High School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Capital Senior High School compares
Capital Senior High School on the metrics families compare, against Idaho and U.S. means.
| Metric | This school | vs Idaho | Idaho avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.3:1 | ▼ 5% | 17.1:1 | 15.7:1 |
| Free-lunch eligible | 20.8% | ▼ 29% | 29.3% | 51.7% |
| Enrollment | 1,170 | top 5% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.3:1
Leaner classes than 36% of US schools, a middle-of-the-pack class size.
1,170
Bigger than 94% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
20.8%
free-lunch eligible
- 29% below the Idaho average of 29.3%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
16.3:1
students per teacher
- 5% below state mean
Top 45% in Idaho - lower ratio than 55% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Funding equity
$12,278
per pupil, district-wide
- above Idaho avg of $11,939
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors5.0 FTE
Per 234 students, the combined health-and-guidance staffing load for this school.
Discipline context
88
in-school suspensions + 62 out-of-school
Suspension rate: 7.5 per 100 students. Combined in-school and out-of-school rate: 12.8 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 59.2%
Hispanic or Latino 24.6%
African American 6.8%
Two or More 5.2%
Asian 3.5%
Native Hawaiian / Pacific Islander 0.5%
American Indian / Alaska Native 0.1%
Largest group: White at 59.2% of enrollment.
Student-body diversity index 58.0/100
Simpson diversity index - at 58.0, Capital Senior High School is more mixed than the Idaho school average of 36.3.
Programs
AP courses offered 24
Funding & spending
District-wide per-pupil expenditure for Boise Independent District, which includes Capital Senior High School.
$12,278
Per student
+3%
vs Idaho
Avg $11,939
-26%
vs U.S.
Avg $16,593
Revenue mix
Local 45.0%
State 43.1%
Federal 11.9%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Capital Senior High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Boise Senior High School | Larger | Similar economic need | Higher S:T ratio |
| Borah Senior High School | Similar size | Similar economic need | Similar S:T ratio |
| Timberline High School | Similar size | Lower economic need | Similar S:T ratio |
| North Junior High School | Similar size | Lower economic need | Similar S:T ratio |
| West Junior High | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Capital Senior High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,512
- Students per teacher
- 17.8:1
- Resource Index
- 33/100
- Enrollment
- 1,308
- Students per teacher
- 16:1
- Resource Index
- 38/100
- Enrollment
- 1,307
- Students per teacher
- 17.7:1
- Resource Index
- 31/100
- Enrollment
- 886
- Students per teacher
- 17.7:1
- Resource Index
- 33/100
- Enrollment
- 717
- Students per teacher
- 15.3:1
- Resource Index
- 40/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Idaho, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,170 students)
Next steps
Verify locally before acting on Capital Senior High School's federal record.
- Compare Capital Senior High School against another school. Compare schools
- Boise Independent District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Capital Senior High School
How many students attend Capital Senior High School?
Capital Senior High School has 1,170 students enrolled. It is a high school in Boise, ID.
What is the student-teacher ratio at Capital Senior High School?
The student-teacher ratio at Capital Senior High School is 16.3:1, which is 5% lower than the Idaho average of 17.1:1 and 4% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Capital Senior High School?
20.8% of students at Capital Senior High School are eligible for free lunch, compared to the Idaho average of 29.3%.
What is the racial and ethnic makeup of Capital Senior High School?
The largest demographic group at Capital Senior High School is White at 59.2% of enrollment, in Boise, ID. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 58.0/100.
What is the Resource Investment Index for Capital Senior High School?
Capital Senior High School has a Resource Investment Index of 55/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Capital Senior High School rank among high schools in Boise?
By Resource Investment Index, Capital Senior High School ranks #3 of 7 high schools in Boise, ID. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Boise on the city page.
Is Capital Senior High School a good school?
Capital Senior High School earns 55/100 on the Resource Investment Index, with class sizes near the Idaho median. It is also one of the largest schools in Idaho. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Boise Independent District?
Besides Capital Senior High School, Boise Independent District also operates Boise Senior High School (1,512 students), Borah Senior High School (1,308 students), and Timberline High School (1,307 students). See the Boise Independent District district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.