Enrollment
876
Oregon · 2024-25 NCES data
2024-25 NCES data Middle school (grades 6-8) NCES 410280001013
Centennial Middle School — Portland, OR
Federal NCES profile for Centennial Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 24/100.
👥 Class size 14
🌟 Gifted program 70
🎓 Counselors 12
📋 Attendance 0
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Centennial Sd 28j · Oregon
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
41.0
Federal CCD staff survey
Students per teacher
21.4:1
vs 18.2:1 Oregon avg
+18% vs state
Free-lunch eligible
67.9%
vs 57.6% Oregon avg
+18% vs state
Student-teacher ratio in context
How Centennial Middle School compares with Oregon and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Centennial Middle School reports 876 enrolled students to the National Center for Education Statistics (NCES) alongside 41.0 full-time-equivalent teachers, producing a 21.4:1 student-teacher ratio. That figure sits 18% above the Oregon state mean of 18.2:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 35% higher, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 67.9% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 18% above the Oregon average and 31% above the national baseline. Counselor coverage works out to roughly 438 students per counselor, above the ASCA-recommended ceiling of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 43.3% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Centennial Sd 28j spends $22,033 per pupil district-wide, below the Oregon average of $22,293 and above the national average of $19,490. Revenue comes 27.7% from local sources (property taxes), 59.8% from the state, and 12.5% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 24/100 (F), calculated from 4 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Centennial Middle School compares
Cross-validating school-level NCES values against Oregon state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Oregon | Oregon avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 21.4:1 | ▲ 18% | 18.2:1 | 15.9:1 |
| Free-lunch eligible | 67.9% | ▲ 18% | 57.6% | 51.8% |
| Enrollment | 876 | top 92% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Economic need
67.9%
free-lunch eligible
— 18% above the Oregon average of 57.6%
Above the 40% Title I schoolwide threshold — federal funds support the whole school, not individual students.
Staffing depth
21.4:1
students per teacher
— 18% above state mean
Top 86% in Oregon — lower ratio than 14% of state schools
Above 20:1 — larger class loads than the typical U.S. public school; staffing is stretched relative to enrollment.
Engagement
43.3%
chronically absent (missed 10%+ of school days)
Chronic absenteeism at or above 20% — the CDC threshold for "high" — signals significant barriers to regular attendance.
Funding equity
$22,033
per pupil, district-wide
— below Oregon avg of $22,293
Above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
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
Enrollment 876 Top 92% in Oregon — larger than 8% of 1,277 state schools
Teachers (FTE) 41.0
Students per teacher 21.4:1 +18% vs state
Free-lunch eligible 67.9% +18% vs state
NCES ID 410280001013
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.
Programs & staff
Gifted & talented Yes
Counselors (FTE) 2.0
Students per counselor 438:1
Discipline & special education
Chronically absent 43.3%
In-school suspensions 95
Out-of-school suspensions 136
Expulsions 4
Funding & spending
District-wide per-pupil expenditure for Centennial Sd 28j, which includes Centennial Middle School.
$22,033
Per student
-1%
vs Oregon
Avg $22,293
+13%
vs U.S.
Avg $19,490
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.
Other Schools in This District
- Enrollment
- 1,731
- Students per teacher
- 24.1:1
- Enrollment
- 509
- Students per teacher
- 21.3:1
- Enrollment
- 435
- Students per teacher
- 22.9:1
- Enrollment
- 397
- Students per teacher
- 19:1
- Enrollment
- 392
- Students per teacher
- 17.5:1
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 22:1 students per teacher
Tumwater Middle School
Standard public school
1,003 students 23.2:1 students per teacher
Ron Russell Middle School
Standard public school
780 students 17.1:1 students per teacher
Hauton B Lee Middle School
Standard public school
718 students 17.1:1 students per teacher
Jackson Middle School
Standard public school
715 students 22.6:1 students per teacher
Floyd Light Middle School
Standard public school
684 students 17.6:1 students per teacher
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
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 18% higher than the Oregon average of 18.2:1 and 35% higher than the national average of 15.9:1.
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 57.6%.
What is the racial and ethnic makeup of Centennial Middle School?
The largest demographic group at Centennial Middle School is White at 34.2%. The school serves a diverse student body in Portland, OR.
What is the Resource Investment Index for Centennial Middle School?
Centennial Middle School has a Resource Investment Index of 24/100 (F) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.