Enrollment
734
Washington · 2024-25 NCES data
Middle school (grades 6-8) · Snohomish, WA
Centennial Middle School
Federal NCES profile for Centennial Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 530802000540
👥 S:T ratio 14
🌟 Gifted program 70
🎓 Counselors 27
📋 Attendance 48
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial Middle School earns 40/100 on the Resource Investment Index, with class sizes larger than 86% of Washington schools.
- #3 of 3
- middle schools in Snohomish · Resource Index
- 40
- Resource Index · Typical
- 21.6:1
- large classes for Washington
- 21.1%
- free-lunch eligible
Centennial Middle School has class sizes larger than 86% of Washington schools. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, Centennial Middle School ranks #3 of 3 middle schools in Snohomish, WA.
School address
District: Snohomish School District · Washington
NCES ID 530802000540 Verify on NCES CCD record →
Teachers (FTE)
34.0
Federal CCD staff survey
Students per teacher
21.6:1
vs 17.6:1 Washington avg
+23% vs state
Free-lunch eligible
21.1%
vs 45.0% Washington avg
-53% vs state
Student-teacher ratio in context
How Centennial Middle School compares with Washington and U.S. medians
What stands out at Centennial Middle School
Centennial Middle School is a large middle school in Snohomish, Washington, enrolling 734 students.
Class loads run heavy: 21.6:1 is larger than about 86% of Washington schools and 23% above the 17.6:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat below the state's typical profile, with 21.1% of students eligible for free meals.
Enrollment of 734 puts it in the larger third of Washington schools by headcount.
Its Resource Investment Index lands in the lower third of 2,394 scored Washington schools.
Among 351 similarly sized, similarly resourced-need Washington schools statewide, it ranks #265, in the lower tier once campus size and economic need are matched.
Its student body is led by White (71%) and Hispanic or Latino (17%) (diversity index 46/100).
Counselor availability sits well past the ASCA benchmark, roughly 367 students sharing each counselor, though short of the most stretched campuses.
Attendance runs somewhat below the norm, with 20.7% of students chronically absent per the 2021-22 civil-rights collection.
Among Snohomish's middle schools, it stands alongside Valley View Middle School (641 students): Centennial Middle School is larger than that campus by headcount and runs leaner classes (21.6:1 vs 22.9:1).
Snohomish School District also operates Glacier Peak High School (1,642 students) and Snohomish High School (1,496 students) alongside Centennial 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 Centennial Middle School compares
Centennial 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 | 21.6:1 | ▲ 23% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 21.1% | ▼ 53% | 45.0% | 51.7% |
| Enrollment | 734 | top 13% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
21.6:1
Leaner classes than 11% of US schools, heavier class loads than most.
734
Bigger than 82% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
21.1%
free-lunch eligible
- 53% 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
21.6:1
students per teacher
- 23% above state mean
Top 86% in Washington - lower ratio than 14% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
20.7%
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
$16,136
per pupil, district-wide
- below Washington avg of $19,487
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors2.0 FTE
Per 367 students, the combined health-and-guidance staffing load for this school.
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 71.1%
Hispanic or Latino 16.5%
Two or More 6.1%
Asian 4.1%
African American 1.0%
American Indian / Alaska Native 0.7%
Native Hawaiian / Pacific Islander 0.5%
Largest group: White at 71.1% of enrollment.
Student-body diversity index 46.2/100
Simpson diversity index - at 46.2, Centennial 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 Snohomish School District, which includes Centennial Middle School.
$16,136
Per student
-17%
vs Washington
Avg $19,487
-3%
vs U.S.
Avg $16,593
Revenue mix
Local 32.1%
State 60.7%
Federal 7.3%
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.
How Centennial Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Glacier Peak High School | Larger | Similar economic need | Higher S:T ratio |
| Snohomish High School | Larger | Similar economic need | Similar S:T ratio |
| Dutch Hill Elementary | Similar size | Similar economic need | Lower S:T ratio |
| Little Cedars Elementary School | Similar size | Lower economic need | Lower S:T ratio |
| Valley View Middle School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Centennial Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,642
- Students per teacher
- 24.9:1
- Resource Index
- 39/100
- Enrollment
- 1,496
- Students per teacher
- 22:1
- Resource Index
- 44/100
- Enrollment
- 694
- Students per teacher
- 19.3:1
- Resource Index
- 43/100
- Enrollment
- 646
- Students per teacher
- 19.6:1
- Resource Index
- 43/100
- Enrollment
- 641
- Students per teacher
- 22.9:1
- Resource Index
- 46/100
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 (~734 students)
Similar student-teacher ratio (~21.6:1)
Next steps
Verify locally before acting on Centennial Middle School's federal record.
- Compare Centennial Middle School against another school. Compare schools
- Snohomish 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 Centennial Middle School
How many students attend Centennial Middle School?
Centennial Middle School has 734 students enrolled. It is a middle school in Snohomish, WA.
What is the student-teacher ratio at Centennial Middle School?
The student-teacher ratio at Centennial Middle School is 21.6:1, which is 23% higher than the Washington average of 17.6:1 and 38% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Centennial Middle School?
21.1% of students at Centennial Middle School are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of Centennial Middle School?
The largest demographic group at Centennial Middle School is White at 71.1% of enrollment, in Snohomish, WA.
What is the Resource Investment Index for Centennial Middle School?
Centennial Middle School has a Resource Investment Index of 40/100 (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 Centennial Middle School rank among middle schools in Snohomish?
By Resource Investment Index, Centennial Middle School ranks #3 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 Centennial Middle School a good school?
Centennial Middle School earns 40/100 on the Resource Investment Index, with class sizes larger than 86% of 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 Snohomish School District?
Besides Centennial Middle School, Snohomish School District also operates Glacier Peak High School (1,642 students), Snohomish High School (1,496 students), and Dutch Hill Elementary (694 students). See the Snohomish 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.