Enrollment
697
Washington · 2024-25 NCES data
Other / mixed grade configuration · Seatac, WA
River Ridge Elementary
Federal NCES profile for River Ridge Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
2024-25 NCES dataOther / mixed grade configurationNCES 530396003798
👥 S:T ratio 27
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 18
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
River Ridge Elementary earns 29/100 on the Resource Investment Index, with class sizes near the Washington median. It is also more racially and ethnically mixed than most Washington schools.
- #4 of 5
- schools in Seatac · Resource Index
- 29
- Resource Index · Lower
- 18.3:1
- students per teacher
- 70.5%
- free-lunch eligible
River Ridge Elementary has class sizes near the Washington median. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, River Ridge Elementary ranks #4 of 5 schools in Seatac, WA.
School address
District: Kent School District · Washington
NCES ID 530396003798 Verify on NCES CCD record →
Teachers (FTE)
38.0
Federal CCD staff survey
Students per teacher
18.3:1
vs 17.6:1 Washington avg
+4% vs state
Free-lunch eligible
70.5%
vs 45.0% Washington avg
+57% vs state
Student-teacher ratio in context
How River Ridge Elementary compares with Washington and U.S. medians
What stands out at River Ridge Elementary
River Ridge Elementary is a higher-need, large combined-grade school in Seatac, Washington, enrolling 697 students.
Class loads run somewhat heavier than typical: 18.3:1 puts it in the larger third of Washington schools by student-teacher ratio.
Economic need is high: 70.5% of students qualify for free meals, 57% above the Washington average, a Title I-weighted population that federal funding formulas prioritise.
Enrollment of 697 puts it in the larger third of Washington schools by headcount.
Its Resource Investment Index trails 92% of the 2,394 Washington schools with a score on record, one of the lower results on this measure.
Among 243 similarly sized, similarly resourced-need Washington schools statewide, it ranks #223, in the lower tier once campus size and economic need are matched.
Its student body is led by Asian (25%) and Hispanic or Latino (25%), more mixed than most schools in the state (diversity index 80/100).
Counselor access is stretched at roughly 697 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 32.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Kent School District also operates Kentridge High School (2,186 students) and Kentwood High School (1,995 students) alongside River Ridge Elementary.
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 River Ridge Elementary compares
River Ridge Elementary on the metrics families compare, against Washington and U.S. means.
| Metric | This school | vs Washington | Washington avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.3:1 | ▲ 4% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 70.5% | ▲ 57% | 45.0% | 51.7% |
| Enrollment | 697 | top 15% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.3:1
Leaner classes than 23% of US schools, heavier class loads than most.
697
Bigger than 80% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
70.5%
free-lunch eligible
- 57% above the Washington average of 45.0%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
18.3:1
students per teacher
- 4% above state mean
Top 67% in Washington - lower ratio than 33% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
32.7%
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
$17,678
per pupil, district-wide
- below Washington avg of $19,487
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 697 students, the combined health-and-guidance staffing load for this school.
Discipline context
13
in-school suspensions + 24 out-of-school
Suspension rate: 1.9 per 100 students. Combined in-school and out-of-school rate: 5.3 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
Asian 25.3%
Hispanic or Latino 25.1%
African American 21.5%
White 13.6%
Native Hawaiian / Pacific Islander 7.6%
Two or More 6.6%
American Indian / Alaska Native 0.3%
Largest group: Asian at 25.3% of enrollment.
Student-body diversity index 79.8/100
Simpson diversity index - at 79.8, River Ridge Elementary is more mixed than the Washington school average of 53.3.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Kent School District, which includes River Ridge Elementary.
$17,678
Per student
-9%
vs Washington
Avg $19,487
+7%
vs U.S.
Avg $16,593
Revenue mix
Local 25.5%
State 61.2%
Federal 13.2%
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.
How River Ridge Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Kentridge High School | Larger | Lower economic need | Higher S:T ratio |
| Kentwood High School | Larger | Lower economic need | Higher S:T ratio |
| Kent-Meridian High School | Larger | Similar economic need | Lower S:T ratio |
| Kentlake High School | Larger | Lower economic need | Higher S:T ratio |
| Northwood Middle School | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to River Ridge Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,186
- Students per teacher
- 24.8:1
- Resource Index
- 40/100
- Enrollment
- 1,995
- Students per teacher
- 25.3:1
- Resource Index
- 33/100
- Enrollment
- 1,639
- Students per teacher
- 16.2:1
- Resource Index
- 36/100
- Enrollment
- 1,561
- Students per teacher
- 23.3:1
- Resource Index
- 35/100
- Enrollment
- 911
- Students per teacher
- 31.4:1
- Resource Index
- 38/100
Similar other 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 (~697 students)
Similar student-teacher ratio (~18.3:1)
Next steps
Verify locally before acting on River Ridge Elementary's federal record.
- Compare River Ridge Elementary against another school. Compare schools
- Kent 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 River Ridge Elementary
How many students attend River Ridge Elementary?
River Ridge Elementary has 697 students enrolled. It is a public school in Seatac, WA.
What is the student-teacher ratio at River Ridge Elementary?
The student-teacher ratio at River Ridge Elementary is 18.3:1, which is 4% higher than the Washington average of 17.6:1 and 17% higher than the national average of 15.7:1.
What percentage of students receive free lunch at River Ridge Elementary?
70.5% of students at River Ridge Elementary are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of River Ridge Elementary?
The largest demographic group at River Ridge Elementary is Asian at 25.3% of enrollment, in Seatac, WA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 79.8/100.
What is the Resource Investment Index for River Ridge Elementary?
River Ridge Elementary has a Resource Investment Index of 29/100 (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 River Ridge Elementary rank among schools in Seatac?
By Resource Investment Index, River Ridge Elementary ranks #4 of 5 schools in Seatac, WA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Seatac on the city page.
Is River Ridge Elementary a good school?
River Ridge Elementary earns 29/100 on the Resource Investment Index, with class sizes near the Washington median. It is also more racially and ethnically mixed than most Washington 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 Kent School District?
Besides River Ridge Elementary, Kent School District also operates Kentridge High School (2,186 students), Kentwood High School (1,995 students), and Kent-Meridian High School (1,639 students). See the Kent School District 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.