Enrollment
313
Washington · 2024-25 NCES data
Middle school (grades 6-8) · Snohomish, WA
Hidden River Middle School
Federal NCES profile for Hidden River Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 48/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 530513002761
👥 S:T ratio 26
🌟 Gifted program 70
📋 Attendance 47
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Hidden River Middle School earns 48/100 on the Resource Investment Index, with class sizes near the Washington median.
- #1 of 3
- middle schools in Snohomish · Resource Index
- 48
- Resource Index · Typical
- 18.4:1
- students per teacher
- 27.8%
- free-lunch eligible
Hidden River Middle School has class sizes near the Washington median. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, Hidden River Middle School ranks #1 of 3 middle schools in Snohomish, WA.
School address
District: Monroe School District · Washington
NCES ID 530513002761 Verify on NCES CCD record →
Teachers (FTE)
17.0
Federal CCD staff survey
Students per teacher
18.4:1
vs 17.6:1 Washington avg
+5% vs state
Free-lunch eligible
27.8%
vs 45.0% Washington avg
-38% vs state
Student-teacher ratio in context
How Hidden River Middle School compares with Washington and U.S. medians
What stands out at Hidden River Middle School
Hidden River Middle School is a mid-sized middle school in Snohomish, Washington, enrolling 313 students.
Class loads run somewhat heavier than typical: 18.4:1 puts it in the larger third of Washington schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 27.8% of students eligible for free meals.
With 313 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 288 statewide peers matched on enrollment and economic need, it ranks mid-pack at #158.
Its student body is led by White (68%) and Hispanic or Latino (22%) (diversity index 48/100).
Attendance runs somewhat below the norm, with 21.1% of students chronically absent per the 2021-22 civil-rights collection.
Among Snohomish's middle schools, it stands alongside Centennial Middle School (734 students): Hidden River Middle School is smaller than that campus by headcount and runs leaner classes (18.4:1 vs 21.6:1).
Monroe School District also operates Monroe High School (1,515 students) and Sky Valley Education Center (985 students) alongside Hidden River Middle School.
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 Hidden River Middle School compares
Hidden River Middle School on the metrics families compare, against Washington and U.S. means.
| Metric | This school | vs Washington | Washington avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.4:1 | ▲ 5% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 27.8% | ▼ 38% | 45.0% | 51.7% |
| Enrollment | 313 | top 62% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.4:1
Leaner classes than 22% of US schools, heavier class loads than most.
313
Bigger than 34% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
27.8%
free-lunch eligible
- 38% below the Washington average of 45.0%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
18.4:1
students per teacher
- 5% above state mean
Top 68% in Washington - lower ratio than 32% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
21.1%
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
$16,215
per pupil, district-wide
- below Washington avg of $19,487
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
6
in-school suspensions + 3 out-of-school
Suspension rate: 1.9 per 100 students. Combined in-school and out-of-school rate: 2.9 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
White 68.1%
Hispanic or Latino 22.3%
Two or More 7.1%
Asian 1.6%
American Indian / Alaska Native 1.0%
Largest group: White at 68.1% of enrollment.
Student-body diversity index 48.1/100
Simpson diversity index - at 48.1, Hidden River Middle School is less mixed than the Washington school average of 53.3.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Monroe School District, which includes Hidden River Middle School.
$16,215
Per student
-17%
vs Washington
Avg $19,487
-2%
vs U.S.
Avg $16,593
Revenue mix
Local 23.0%
State 68.2%
Federal 8.8%
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 Hidden River Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Monroe High School | Larger | Similar economic need | Higher S:T ratio |
| Sky Valley Education Center | Larger | Lower economic need | Higher S:T ratio |
| Park Place Middle School | Larger | Similar economic need | Higher S:T ratio |
| Frank Wagner Elementary | Larger | Higher economic need | Lower S:T ratio |
| Salem Woods Elementary School | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Hidden River Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,515
- Students per teacher
- 21:1
- Resource Index
- 43/100
- Enrollment
- 985
- Students per teacher
- 34:1
- Resource Index
- 15/100
- Enrollment
- 755
- Students per teacher
- 20.4:1
- Resource Index
- 45/100
- Enrollment
- 545
- Students per teacher
- 14:1
- Resource Index
- 50/100
- Enrollment
- 516
- Students per teacher
- 17.8:1
- Resource Index
- 54/100
Similar middle schools in Snohomish
2 comparable middle schools (grades 6-8) serving the same city.
Similar middle 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 (~313 students)
Similar student-teacher ratio (~18.4:1)
Next steps
Verify locally before acting on Hidden River Middle School's federal record.
- Compare Hidden River Middle School against another school. Compare schools
- Monroe 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 Hidden River Middle School
How many students attend Hidden River Middle School?
Hidden River Middle School has 313 students enrolled. It is a middle school in Snohomish, WA.
What is the student-teacher ratio at Hidden River Middle School?
The student-teacher ratio at Hidden River Middle School is 18.4:1, which is 5% 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 Hidden River Middle School?
27.8% of students at Hidden River Middle School are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of Hidden River Middle School?
The largest demographic group at Hidden River Middle School is White at 68.1% of enrollment, in Snohomish, WA.
What is the Resource Investment Index for Hidden River Middle School?
Hidden River Middle School has a Resource Investment Index of 48/100 (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 Hidden River Middle School rank among middle schools in Snohomish?
By Resource Investment Index, Hidden River Middle School ranks #1 of 3 middle schools in Snohomish, WA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Snohomish on the city page.
Is Hidden River Middle School a good school?
Hidden River Middle School earns 48/100 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 Monroe School District?
Besides Hidden River Middle School, Monroe School District also operates Monroe High School (1,515 students), Sky Valley Education Center (985 students), and Park Place Middle School (755 students). See the Monroe 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.