Enrollment
165
Oregon · 2024-25 NCES data
2024-25 NCES data Elementary school (grades K-5) NCES 411004001667 Charter school
Portland Arthur Academy Charter School — Portland, OR
Federal NCES profile for Portland Arthur Academy Charter School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 64/100.
👥 Class size 40
🌟 Gifted program 70
📋 Attendance 83
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: Portland Sd 1j · 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)
10.0
Federal CCD staff survey
Students per teacher
15:1
vs 18.2:1 Oregon avg
-18% vs state
Free-lunch eligible
28.0%
vs 57.6% Oregon avg
-51% vs state
Student-teacher ratio in context
How Portland Arthur Academy Charter 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
Portland Arthur Academy Charter School reports 165 enrolled students to the National Center for Education Statistics (NCES) alongside 10.0 full-time-equivalent teachers, producing a 15:1 student-teacher ratio. That figure sits 18% below the Oregon state mean of 18.2:1, signalling more teacher attention per pupil than the state benchmark. Against the national 2024-25 average of 15.9:1, it is 6% lower, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 28.0% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 51% below the Oregon average and 46% below the national baseline. Chronic absenteeism — missing 10% or more of school days — stands at 6.7% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Portland Sd 1j spends $26,919 per pupil district-wide, above the Oregon average of $22,293 and above the national average of $19,490. Revenue comes 57.4% from local sources (property taxes), 33.4% from the state, and 9.2% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 64/100 (C+), calculated from 3 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 Portland Arthur Academy Charter 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 | 15:1 | ▼ 18% | 18.2:1 | 15.9:1 |
| Free-lunch eligible | 28.0% | ▼ 51% | 57.6% | 51.8% |
| Enrollment | 165 | top 18% | — | — |
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
28.0%
free-lunch eligible
— 51% below the Oregon average of 57.6%
Below the 40% Title I threshold — federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
15:1
students per teacher
— 18% below state mean
Top 23% in Oregon — lower ratio than 77% of state schools
Below the 15:1 benchmark — typical of schools with smaller class sizes and more individualized attention.
Engagement
6.7%
chronically absent (missed 10%+ of school days)
Below 10% — strong attendance relative to the post-pandemic national landscape.
Funding equity
$26,919
per pupil, district-wide
— above Oregon avg of $22,293
Above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 3 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 1.8 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 165 Top 18% in Oregon — larger than 82% of 1,277 state schools
Teachers (FTE) 10.0
Students per teacher 15:1 -18% vs state
Free-lunch eligible 28.0% -51% vs state
NCES ID 411004001667
Student demographics
White 43.6%
Asian 26.1%
African American 12.1%
Hispanic or Latino 10.3%
Two or More 7.3%
American Indian / Alaska Native 0.6%
Largest group: White at 43.6% of enrollment.
Programs & staff
Gifted & talented Yes
Counselors (FTE) 0.0
Discipline & special education
Chronically absent 6.7%
In-school suspensions 0
Out-of-school suspensions 3
Funding & spending
District-wide per-pupil expenditure for Portland Sd 1j, which includes Portland Arthur Academy Charter School.
$26,919
Per student
+21%
vs Oregon
Avg $22,293
+38%
vs U.S.
Avg $19,490
Revenue mix
Local 57.4%
State 33.4%
Federal 9.2%
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
- 2,149
- Students per teacher
- 21.3:1
- Enrollment
- 1,807
- Students per teacher
- 18.7:1
- Enrollment
- 1,681
- Students per teacher
- 15.8:1
- Enrollment
- 1,650
- Students per teacher
- 20.5:1
- Enrollment
- 1,611
- Students per teacher
- 20.3:1
Similar elementary schools in Portland
6 comparable elementary schools (grades K-5) serving the same city.
Sato Elementary School
Standard public school
863 students 19.9:1 students per teacher
Springville K-8 School
Standard public school
742 students 19.6:1 students per teacher
Laurelhurst Elementary School
Standard public school
660 students 22.5:1 students per teacher
Jacob Wismer Elementary School
Standard public school
592 students 20.4:1 students per teacher
Ainsworth Elementary School
Standard public school
587 students 20.1:1 students per teacher
Findley Elementary
Standard public school
549 students 21.1:1 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 Portland Arthur Academy Charter School
How many students attend Portland Arthur Academy Charter School?
Portland Arthur Academy Charter School has 165 students enrolled. It is a elementary school in Portland, OR.
What is the student-teacher ratio at Portland Arthur Academy Charter School?
The student-teacher ratio at Portland Arthur Academy Charter School is 15:1, which is 18% lower than the Oregon average of 18.2:1 and 6% lower than the national average of 15.9:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Portland Arthur Academy Charter School?
28.0% of students at Portland Arthur Academy Charter School are eligible for free lunch, compared to the Oregon average of 57.6%.
What is the racial and ethnic makeup of Portland Arthur Academy Charter School?
The largest demographic group at Portland Arthur Academy Charter School is White at 43.6%. The school serves a diverse student body in Portland, OR.
What is the Resource Investment Index for Portland Arthur Academy Charter School?
Portland Arthur Academy Charter School has a Resource Investment Index of 64/100 (C+) based on 3 factors: student-teacher ratio, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.