Enrollment
359
Washington · 2024-25 NCES data
Elementary school (grades K-5) · Seattle, WA
Rainier Prep
Federal NCES profile for Rainier Prep, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
2024-25 NCES dataElementary school (grades K-5)NCES 530033503533Charter school
👥 S:T ratio 40
🌟 Gifted program 30
🎓 Counselors 28
📋 Attendance 92
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rainier Prep earns 47/100 on the Resource Investment Index, with class sizes near the Washington median.
- #6 of 10
- elementary schools in Seattle · Resource Index
- 47
- Resource Index · Typical
- 15:1
- students per teacher
- 60.6%
- free-lunch eligible
Rainier Prep has class sizes near the Washington median. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, Rainier Prep ranks #6 of 10 elementary schools in Seattle, WA.
School address
District: Rainier Prep Charter School District · Washington
NCES ID 530033503533 Verify on NCES CCD record →
Teachers (FTE)
24.0
Federal CCD staff survey
Students per teacher
15:1
vs 17.6:1 Washington avg
-15% vs state
Free-lunch eligible
60.6%
vs 45.0% Washington avg
+35% vs state
Student-teacher ratio in context
How Rainier Prep compares with Washington and U.S. medians
What stands out at Rainier Prep
Rainier Prep is a higher-need, mid-sized charter elementary school in Seattle, Washington, enrolling 359 students.
Class sizes run a bit leaner than typical: 15:1 puts it in the smaller third of Washington schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 60.6% of students eligible for free meals.
With 359 students, its enrollment sits close to the Washington median campus size.
Its Resource Investment Index sits near the middle of the pack among 2,394 scored Washington schools.
Against 402 statewide peers matched on enrollment and economic need, it ranks mid-pack at #175.
Its student body is led by African American (51%) and Hispanic or Latino (30%) (diversity index 64/100).
Counselor availability sits well past the ASCA benchmark, roughly 359 students sharing each counselor, though short of the most stretched campuses.
Attendance holds up well here: only 3.3% of students were chronically absent, below the typical post-pandemic national figure.
Its district draws 15.3% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Seattle's elementary schools, it stands alongside Hazel Wolf K-8 (660 students): Rainier Prep is smaller than that campus by headcount and runs leaner classes (15:1 vs 16.1:1).
Rainier Prep Charter School District is a single-school charter district, so Rainier Prep operates independently rather than alongside district-mates.
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 Rainier Prep compares
Rainier Prep on the metrics families compare, against Washington and U.S. means.
| Metric | This school | vs Washington | Washington avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15:1 | ▼ 15% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 60.6% | ▲ 35% | 45.0% | 51.7% |
| Enrollment | 359 | top 54% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15:1
Leaner classes than 47% of US schools, a middle-of-the-pack class size.
359
Bigger than 41% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
60.6%
free-lunch eligible
- 35% above the Washington average of 45.0%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
15:1
students per teacher
- 15% below state mean
Top 34% in Washington - lower ratio than 66% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
3.3%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$16,747
per pupil, district-wide
- below Washington avg of $19,487
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors1.0 FTE
Per 359 students, the combined health-and-guidance staffing load for this school.
Discipline context
22
in-school suspensions + 10 out-of-school
Suspension rate: 6.1 per 100 students. Combined in-school and out-of-school rate: 8.9 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
African American 50.7%
Hispanic or Latino 30.1%
Asian 8.4%
White 5.3%
Two or More 5.0%
Native Hawaiian / Pacific Islander 0.6%
Largest group: African American at 50.7% of enrollment.
Student-body diversity index 64.0/100
Simpson diversity index - at 64.0, Rainier Prep is more mixed than the Washington school average of 53.3.
Programs
Funding & spending
District-wide per-pupil expenditure for Rainier Prep Charter School District, which includes Rainier Prep.
$16,747
Per student
-14%
vs Washington
Avg $19,487
+1%
vs U.S.
Avg $16,593
Revenue mix
Local 12.8%
State 71.8%
Federal 15.3%
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.
Similar elementary schools in Seattle
6 comparable elementary schools (grades K-5) serving the same city.
Hazel Wolf K-8
Standard public school
660 students 16.1:1 students per teacher
Cascadia Elementary
Standard public school
531 students 22.1:1 students per teacher
Mcdonald International School
Standard public school
443 students 17.7:1 students per teacher
Bryn Mawr Elementary School
Standard public school
415 students 17.3:1 students per teacher
Campbell Hill Elementary School
Standard public school
345 students 16.4:1 students per teacher
Magnolia Elementary School
Standard public school
320 students 14.5:1 students per teacher
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Washington, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~359 students)
Similar student-teacher ratio (~15:1)
Next steps
Verify locally before acting on Rainier Prep's federal record.
- Compare Rainier Prep against another school. Compare schools
- Rainier Prep Charter School District'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 Rainier Prep
How many students attend Rainier Prep?
Rainier Prep has 359 students enrolled. It is an elementary school in Seattle, WA.
What is the student-teacher ratio at Rainier Prep?
The student-teacher ratio at Rainier Prep is 15:1, which is 15% lower than the Washington average of 17.6:1 and 4% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Rainier Prep?
60.6% of students at Rainier Prep are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of Rainier Prep?
The largest demographic group at Rainier Prep is African American at 50.7% of enrollment, in Seattle, WA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.0/100.
What is the Resource Investment Index for Rainier Prep?
Rainier Prep has a Resource Investment Index of 47/100 (typical 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 Rainier Prep rank among elementary schools in Seattle?
By Resource Investment Index, Rainier Prep ranks #6 of 10 elementary schools in Seattle, WA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Seattle on the city page.
Is Rainier Prep a good school?
Rainier Prep earns 47/100 on the Resource Investment Index, with class sizes near the Washington median. 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 Rainier Prep Charter School District?
None; Rainier Prep Charter School District is a single-school charter district, and Rainier Prep is its only campus.
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.