Enrollment
876
Oregon · 2024-25 NCES data
Middle school (grades 6-8) · Portland, OR
Centennial Middle School
Federal NCES profile for Centennial Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 24/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 410280001013
👥 S:T ratio 14
🌟 Gifted program 70
🎓 Counselors 12
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial Middle School earns 24/100 on the Resource Investment Index, with class sizes larger than 86% of Oregon schools. It is also more racially and ethnically mixed than most Oregon schools.
- #23 of 24
- middle schools in Portland · Resource Index
- 24
- Resource Index · Lower
- 21.4:1
- large classes for Oregon
- 67.9%
- free-lunch eligible
Centennial Middle School has class sizes larger than 86% of Oregon schools. Computed live against every Oregon school reporting to NCES.
By Resource Investment Index, Centennial Middle School ranks #23 of 24 middle schools in Portland, OR.
School address
District: Centennial Sd 28j · Oregon
NCES ID 410280001013 Verify on NCES CCD record →
Teachers (FTE)
41.0
Federal CCD staff survey
Students per teacher
21.4:1
vs 17.6:1 Oregon avg
+22% vs state
Free-lunch eligible
67.9%
vs 52.8% Oregon avg
+29% vs state
Student-teacher ratio in context
How Centennial Middle School compares with Oregon and U.S. medians
What stands out at Centennial Middle School
Centennial Middle School is a higher-need, large middle school in Portland, Oregon, enrolling 876 students.
Class loads run heavy: 21.4:1 is larger than about 86% of Oregon schools and 22% above the 17.6:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat above the state's typical profile, with 67.9% of students eligible for free meals.
By headcount it is one of the larger campuses in Oregon, bigger than 92% of state schools at 876 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 79 similarly sized, similarly resourced-need Oregon schools statewide, it ranks #73, in the lower tier once campus size and economic need are matched.
Its student body is led by White (34%) and Hispanic or Latino (30%), more mixed than most schools in the state (diversity index 76/100).
Counselor access is stretched at roughly 438 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 43.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Discipline events run high: 231 in- and out-of-school suspensions were reported for 876 students in the 2021-22 Civil Rights Data Collection.
The federal civil-rights collection also records 4 expulsions at this campus for 2021-22.
Among Portland's middle schools, it stands alongside Stoller Middle School (1,069 students): Centennial Middle School is smaller than that campus by headcount and runs leaner classes (21.4:1 vs 25.5:1).
Centennial Sd 28j also operates Centennial High School (1,731 students) and Butler Creek Elementary School (509 students) alongside Centennial Middle 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 Centennial Middle School compares
Centennial Middle 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 | 21.4:1 | ▲ 22% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 67.9% | ▲ 29% | 52.8% | 51.7% |
| Enrollment | 876 | top 8% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
21.4:1
Leaner classes than 12% of US schools, heavier class loads than most.
876
Bigger than 88% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
67.9%
free-lunch eligible
- 29% above the Oregon average of 52.8%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
21.4:1
students per teacher
- 22% above state mean
Top 86% in Oregon - lower ratio than 14% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
43.3%
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
$14,666
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
Counselors2.0 FTE
Per 438 students, the combined health-and-guidance staffing load for this school.
Discipline context
95
in-school suspensions + 136 out-of-school
Suspension rate: 10.8 per 100 students. Combined in-school and out-of-school rate: 26.4 per 100 students. Reported via the Civil Rights Data Collection. Includes 4 expulsions.
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 34.2%
Hispanic or Latino 29.6%
Asian 16.3%
African American 9.1%
Two or More 6.8%
Native Hawaiian / Pacific Islander 3.1%
American Indian / Alaska Native 0.9%
Largest group: White at 34.2% of enrollment.
Student-body diversity index 75.5/100
Simpson diversity index - at 75.5, Centennial Middle School is more mixed than the Oregon school average of 47.1.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Centennial Sd 28j, which includes Centennial Middle School.
$14,666
Per student
-19%
vs Oregon
Avg $18,086
-12%
vs U.S.
Avg $16,593
Revenue mix
Local 27.7%
State 59.8%
Federal 12.5%
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 Centennial Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Centennial High School | Larger | Similar economic need | Higher S:T ratio |
| Butler Creek Elementary School | Smaller | Similar economic need | Similar S:T ratio |
| Oliver Middle | Smaller | Similar economic need | Similar S:T ratio |
| Parklane Elementary School | Smaller | Similar economic need | Lower S:T ratio |
| Powell Butte Elementary School | Smaller | Similar economic need | Lower S:T ratio |
Comparisons are relative to Centennial Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,731
- Students per teacher
- 23.7:1
- Resource Index
- 31/100
- Enrollment
- 509
- Students per teacher
- 21.2:1
- Resource Index
- 21/100
- Enrollment
- 435
- Students per teacher
- 21.8:1
- Resource Index
- 13/100
- Enrollment
- 397
- Students per teacher
- 17.3:1
- Resource Index
- 30/100
- Enrollment
- 392
- Students per teacher
- 17.8:1
- Resource Index
- 30/100
Similar middle schools in Portland
6 comparable middle schools (grades 6-8) serving the same city.
Stoller Middle School
Standard public school
1,069 students 25.5:1 students per teacher
Tumwater Middle School
Standard public school
1,003 students 23.3:1 students per teacher
Ron Russell Middle School
Standard public school
780 students 17.3:1 students per teacher
Hauton B Lee Middle School
Standard public school
718 students 18.9:1 students per teacher
Jackson Middle School
Standard public school
715 students 20.4:1 students per teacher
Floyd Light Middle School
Standard public school
684 students 19:1 students per teacher
Similar middle 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 (~876 students)
Similar student-teacher ratio (~21.4:1)
Next steps
Verify locally before acting on Centennial Middle School's federal record.
- Compare Centennial Middle School against another school. Compare schools
- Centennial Sd 28j'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 Centennial Middle School
How many students attend Centennial Middle School?
Centennial Middle School has 876 students enrolled. It is a middle school in Portland, OR.
What is the student-teacher ratio at Centennial Middle School?
The student-teacher ratio at Centennial Middle School is 21.4:1, which is 22% higher than the Oregon average of 17.6:1 and 36% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Centennial Middle School?
67.9% of students at Centennial Middle School are eligible for free lunch, compared to the Oregon average of 52.8%.
What is the racial and ethnic makeup of Centennial Middle School?
The largest demographic group at Centennial Middle School is White at 34.2% of enrollment, in Portland, OR. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 75.5/100.
What is the Resource Investment Index for Centennial Middle School?
Centennial Middle School has a Resource Investment Index of 24/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Centennial Middle School rank among middle schools in Portland?
By Resource Investment Index, Centennial Middle School ranks #23 of 24 middle schools in Portland, OR. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Portland on the city page.
Is Centennial Middle School a good school?
Centennial Middle School earns 24/100 on the Resource Investment Index, with class sizes larger than 86% of Oregon schools. It is also more racially and ethnically mixed than most Oregon schools. 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 Centennial Sd 28j?
Besides Centennial Middle School, Centennial Sd 28j also operates Centennial High School (1,731 students), Butler Creek Elementary School (509 students), and Oliver Middle (435 students). See the Centennial Sd 28j 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.