Enrollment
1,280
Oregon · 2024-25 NCES data
High school (grades 9-12) · Clackamas, OR
Clackamas High School
Federal NCES profile for Clackamas High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 35/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 410883000093
👥 S:T ratio 0
📚 AP courses 70
🌟 Gifted program 70
📋 Attendance 1
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Clackamas High School earns 35/100 on the Resource Investment Index, with class sizes larger than 96% of Oregon schools. It is also one of the largest schools in Oregon.
- #6 of 6
- public schools in Clackamas · Resource Index
- 35
- Resource Index · Typical
- 26.1:1
- large classes for Oregon
- 22.7%
- free-lunch eligible
Clackamas High School has class sizes larger than 96% of Oregon schools. Computed live against every Oregon school reporting to NCES.
By Resource Investment Index, Clackamas High School ranks #6 of 6 public schools in Clackamas, OR.
School address
District: North Clackamas Sd 12 · Oregon
NCES ID 410883000093 Verify on NCES CCD record →
Teachers (FTE)
49.0
Federal CCD staff survey
Students per teacher
26.1:1
vs 17.6:1 Oregon avg
+48% vs state
Free-lunch eligible
22.7%
vs 52.8% Oregon avg
-57% vs state
Student-teacher ratio in context
How Clackamas High School compares with Oregon and U.S. medians
What stands out at Clackamas High School
Clackamas High School is a large high school in Clackamas, Oregon, enrolling 1,280 students.
Class loads run heavy: 26.1:1 is larger than about 96% of Oregon schools and 48% above the 17.6:1 state mean, so each teacher carries more students than is typical.
Comparatively few students face economic hardship here, 22.7% free-meal eligibility runs 57% below the Oregon average.
By headcount it is one of the larger campuses in Oregon, bigger than 95% of state schools at 1,280 students.
Its Resource Investment Index trails 91% of the 1,273 Oregon schools with a score on record, one of the lower results on this measure.
Among 48 similarly sized, similarly resourced-need Oregon schools statewide, it ranks #46, in the lower tier once campus size and economic need are matched.
Its student body is led by White (49%) and Asian (21%), more mixed than most schools in the state (diversity index 68/100).
On the academic-pipeline side it reports 14 Advanced Placement courses.
Chronic absenteeism is elevated: 39.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
North Clackamas Sd 12 also operates Adrienne C. Nelson High School (1,536 students) and Happy Valley Middle School (1,158 students) alongside Clackamas 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 Clackamas High School compares
Clackamas High School on the metrics families compare, against Oregon and U.S. means.
| Metric | This school | vs Oregon | Oregon avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 26.1:1 | ▲ 48% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 22.7% | ▼ 57% | 52.8% | 51.7% |
| Enrollment | 1,280 | top 5% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
26.1:1
Leaner classes than 4% of US schools, heavier class loads than most.
1,280
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
22.7%
free-lunch eligible
- 57% below the Oregon average of 52.8%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
26.1:1
students per teacher
- 48% above state mean
Top 96% in Oregon - lower ratio than 4% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
39.8%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$14,929
per pupil, district-wide
- below Oregon avg of $18,086
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
4
in-school suspensions + 31 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 2.7 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 48.8%
Asian 21.3%
Hispanic or Latino 16.4%
Two or More 8.4%
African American 4.3%
Native Hawaiian / Pacific Islander 0.7%
American Indian / Alaska Native 0.2%
Largest group: White at 48.8% of enrollment.
Student-body diversity index 68.1/100
Simpson diversity index - at 68.1, Clackamas High School is more mixed than the Oregon school average of 47.1.
Programs
AP courses offered 14
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for North Clackamas Sd 12, which includes Clackamas High School.
$14,929
Per student
-17%
vs Oregon
Avg $18,086
-10%
vs U.S.
Avg $16,593
Revenue mix
Local 46.9%
State 45.8%
Federal 7.4%
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 Clackamas High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Adrienne C. Nelson High School | Similar size | Similar economic need | Higher S:T ratio |
| Happy Valley Middle School | Similar size | Similar economic need | Lower S:T ratio |
| Putnam High School | Similar size | Higher economic need | Lower S:T ratio |
| Rock Creek Middle School | Smaller | Similar economic need | Lower S:T ratio |
| Milwaukie High School | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Clackamas High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,536
- Students per teacher
- 30.1:1
- Resource Index
- 39/100
- Enrollment
- 1,158
- Students per teacher
- 24.6:1
- Resource Index
- 39/100
- Enrollment
- 1,060
- Students per teacher
- 24.1:1
- Resource Index
- 25/100
- Enrollment
- 889
- Students per teacher
- 19.8:1
- Resource Index
- 38/100
- Enrollment
- 874
- Students per teacher
- 19:1
- Resource Index
- 31/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Oregon, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,280 students)
Similar student-teacher ratio (~26.1:1)
Next steps
Verify locally before acting on Clackamas High School's federal record.
- Compare Clackamas High School against another school. Compare schools
- North Clackamas Sd 12'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 Clackamas High School
How many students attend Clackamas High School?
Clackamas High School has 1,280 students enrolled. It is a high school in Clackamas, OR.
What is the student-teacher ratio at Clackamas High School?
The student-teacher ratio at Clackamas High School is 26.1:1, which is 48% higher than the Oregon average of 17.6:1 and 66% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Clackamas High School?
22.7% of students at Clackamas High School are eligible for free lunch, compared to the Oregon average of 52.8%.
What is the racial and ethnic makeup of Clackamas High School?
The largest demographic group at Clackamas High School is White at 48.8% of enrollment, in Clackamas, OR. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 68.1/100.
What is the Resource Investment Index for Clackamas High School?
Clackamas High School has a Resource Investment Index of 35/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Clackamas High School rank among public schools in Clackamas?
By Resource Investment Index, Clackamas High School ranks #6 of 6 public schools in Clackamas, OR. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Clackamas on the city page.
Is Clackamas High School a good school?
Clackamas High School earns 35/100 on the Resource Investment Index, with class sizes larger than 96% of Oregon schools. It is also one of the largest schools in Oregon. 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 North Clackamas Sd 12?
Besides Clackamas High School, North Clackamas Sd 12 also operates Adrienne C. Nelson High School (1,536 students), Happy Valley Middle School (1,158 students), and Putnam High School (1,060 students). See the North Clackamas Sd 12 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.