Enrollment
156
Oregon · 2024-25 NCES data
Elementary school (grades K-5) · Portland, OR
Arthur Academy
Federal NCES profile for Arthur Academy, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
2024-25 NCES dataElementary school (grades K-5)NCES 410394004181Charter school
👥 S:T ratio 0
🌟 Gifted program 70
📋 Attendance 50
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Arthur Academy earns 40/100 on the Resource Investment Index, with class sizes larger than 99% of Oregon schools. It is also more racially and ethnically mixed than most Oregon schools.
- #47 of 87
- elementary schools in Portland · Resource Index
- 40
- Resource Index · Typical
- 52:1
- large classes for Oregon
- 44.3%
- free-lunch eligible
Arthur Academy has class sizes larger than 99% of Oregon schools. Computed live against every Oregon school reporting to NCES.
By Resource Investment Index, Arthur Academy ranks #47 of 87 elementary schools in Portland, OR.
School address
District: David Douglas Sd 40 · Oregon
NCES ID 410394004181 Verify on NCES CCD record →
Teachers (FTE)
3.0
Federal CCD staff survey
Students per teacher
52:1
vs 17.6:1 Oregon avg
+195% vs state
Free-lunch eligible
44.3%
vs 52.8% Oregon avg
-16% vs state
Student-teacher ratio in context
How Arthur Academy compares with Oregon and U.S. medians
What stands out at Arthur Academy
Arthur Academy is a mid-sized charter elementary school in Portland, Oregon, enrolling 156 students.
Class loads run heavy: 52:1 is larger than about 99% of Oregon schools and 195% above the 17.6:1 state mean, so each teacher carries more students than is typical.
Its free-meal eligibility rate of 44.3% lands close to the Oregon typical range, neither a high- nor low-need campus by this measure.
Enrollment of 156 puts it in the smaller third of Oregon schools by headcount.
Its Resource Investment Index lands in the upper third of 1,273 scored Oregon schools.
Against 51 statewide peers matched on enrollment and economic need, it ranks mid-pack at #24.
Its student body is led by White (41%) and Asian (21%), more mixed than most schools in the state (diversity index 75/100).
Attendance runs somewhat below the norm, with 19.9% of students chronically absent per the 2021-22 civil-rights collection.
Its district draws 15.7% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Portland's elementary schools, it stands alongside Sato Elementary School (863 students): Arthur Academy is smaller than that campus by headcount and runs heavier classes (52:1 vs 22.1:1).
David Douglas Sd 40 also operates David Douglas High School (2,756 students) and Ron Russell Middle School (780 students) alongside Arthur Academy.
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 Arthur Academy compares
Arthur Academy on the metrics families compare, against Oregon and U.S. means.
| Metric | This school | vs Oregon | Oregon avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 52:1 | ▲ 195% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 44.3% | ▼ 16% | 52.8% | 51.7% |
| Enrollment | 156 | top 84% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
52:1
Leaner classes than 0% of US schools, heavier class loads than most.
156
Bigger than 15% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
44.3%
free-lunch eligible
- 16% below the Oregon average of 52.8%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
52:1
students per teacher
- 195% above state mean
Top 99% in Oregon - lower ratio than 1% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
19.9%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$19,860
per pupil, district-wide
- above Oregon avg of $18,086
Somewhat 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 + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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 41.0%
Asian 20.5%
Hispanic or Latino 14.1%
African American 10.3%
Two or More 9.6%
Native Hawaiian / Pacific Islander 4.5%
Largest group: White at 41.0% of enrollment.
Student-body diversity index 74.8/100
Simpson diversity index - at 74.8, Arthur Academy is more mixed than the Oregon school average of 47.1.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for David Douglas Sd 40, which includes Arthur Academy.
$19,860
Per student
+10%
vs Oregon
Avg $18,086
+20%
vs U.S.
Avg $16,593
Revenue mix
Local 15.7%
State 68.6%
Federal 15.7%
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 Arthur Academy Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| David Douglas High School | Larger | Higher economic need | Lower S:T ratio |
| Ron Russell Middle School | Larger | Higher economic need | Lower S:T ratio |
| Floyd Light Middle School | Larger | Higher economic need | Lower S:T ratio |
| Alice Ott Middle School | Larger | Higher economic need | Lower S:T ratio |
| Gilbert Park Elementary School | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to Arthur Academy's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,756
- Students per teacher
- 19.1:1
- Resource Index
- 48/100
- Enrollment
- 780
- Students per teacher
- 17.3:1
- Resource Index
- 31/100
- Enrollment
- 684
- Students per teacher
- 19:1
- Resource Index
- 31/100
- Enrollment
- 594
- Students per teacher
- 19.8:1
- Resource Index
- 33/100
- Enrollment
- 503
- Students per teacher
- 24:1
- Resource Index
- 25/100
Similar elementary schools in Portland
6 comparable elementary schools (grades K-5) serving the same city.
Sato Elementary School
Standard public school
863 students 22.1:1 students per teacher
Springville K-8 School
Standard public school
742 students 19:1 students per teacher
Laurelhurst Elementary School
Standard public school
660 students 22:1 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 21:1 students per teacher
Findley Elementary
Standard public school
549 students 22:1 students per teacher
Similar elementary 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 (~156 students)
Similar student-teacher ratio (~52:1)
Next steps
Verify locally before acting on Arthur Academy's federal record.
- Compare Arthur Academy against another school. Compare schools
- David Douglas Sd 40'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 Arthur Academy
How many students attend Arthur Academy?
Arthur Academy has 156 students enrolled. It is an elementary school in Portland, OR.
What is the student-teacher ratio at Arthur Academy?
The student-teacher ratio at Arthur Academy is 52:1, which is 195% higher than the Oregon average of 17.6:1 and 231% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Arthur Academy?
44.3% of students at Arthur Academy are eligible for free lunch, compared to the Oregon average of 52.8%.
What is the racial and ethnic makeup of Arthur Academy?
The largest demographic group at Arthur Academy is White at 41.0% of enrollment, in Portland, OR. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 74.8/100.
What is the Resource Investment Index for Arthur Academy?
Arthur Academy has a Resource Investment Index of 40/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Arthur Academy rank among elementary schools in Portland?
By Resource Investment Index, Arthur Academy ranks #47 of 87 elementary 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 elementary schools in Portland on the city page.
Is Arthur Academy a good school?
Arthur Academy earns 40/100 on the Resource Investment Index, with class sizes larger than 99% 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 David Douglas Sd 40?
Besides Arthur Academy, David Douglas Sd 40 also operates David Douglas High School (2,756 students), Ron Russell Middle School (780 students), and Floyd Light Middle School (684 students). See the David Douglas Sd 40 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.