Enrollment
436
Washington · 2024-25 NCES data
Elementary school (grades K-5) · Mukilteo, WA
Endeavour Elementary
Federal NCES profile for Endeavour Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 51/100.
2024-25 NCES dataElementary school (grades K-5)NCES 530543001727
👥 S:T ratio 38
🌟 Gifted program 70
🎓 Counselors 13
📋 Attendance 85
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Endeavour Elementary earns 51/100 on the Resource Investment Index, with class sizes near the Washington median.
- #2 of 7
- public schools in Mukilteo · Resource Index
- 51
- Resource Index · Higher
- 15.6:1
- students per teacher
- 20.6%
- free-lunch eligible
Endeavour Elementary has class sizes near the Washington median. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, Endeavour Elementary ranks #2 of 7 public schools in Mukilteo, WA.
School address
District: Mukilteo School District · Washington
NCES ID 530543001727 Verify on NCES CCD record →
Teachers (FTE)
28.0
Federal CCD staff survey
Students per teacher
15.6:1
vs 17.6:1 Washington avg
-11% vs state
Free-lunch eligible
20.6%
vs 45.0% Washington avg
-54% vs state
Student-teacher ratio in context
How Endeavour Elementary compares with Washington and U.S. medians
What stands out at Endeavour Elementary
Endeavour Elementary is a mid-sized elementary school in Mukilteo, Washington, enrolling 436 students.
At 15.6:1, its student-teacher ratio sits close to the Washington median, within a few percentage points of the 17.6:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 20.6% of students eligible for free meals.
With 436 students, its enrollment sits close to the Washington median campus size.
Its Resource Investment Index lands in the upper third of 2,394 scored Washington schools.
Against 427 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #123.
Its student body is led by White (42%) and Asian (30%) (diversity index 71/100).
Counselor access is stretched at roughly 436 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 6.2% of students were chronically absent, below the typical post-pandemic national figure.
Among Mukilteo's elementary schools, it stands alongside Mukilteo Elementary (521 students): Endeavour Elementary is smaller than that campus by headcount and runs leaner classes (15.6:1 vs 16.8:1).
Mukilteo School District also operates Kamiak High School (2,384 students) and Mariner High School (2,106 students) alongside Endeavour 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 Endeavour Elementary compares
Endeavour 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 | 15.6:1 | ▼ 11% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 20.6% | ▼ 54% | 45.0% | 51.7% |
| Enrollment | 436 | top 41% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.6:1
Leaner classes than 41% of US schools, a middle-of-the-pack class size.
436
Bigger than 53% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
20.6%
free-lunch eligible
- 54% 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
15.6:1
students per teacher
- 11% below state mean
Top 41% in Washington - lower ratio than 59% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
6.2%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$19,467
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 436 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 5 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 1.1 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 41.6%
Asian 29.7%
Two or More 11.0%
Hispanic or Latino 10.6%
African American 6.9%
American Indian / Alaska Native 0.2%
Largest group: White at 41.6% of enrollment.
Student-body diversity index 71.1/100
Simpson diversity index - at 71.1, Endeavour Elementary is more mixed than the Washington school average of 53.3.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Mukilteo School District, which includes Endeavour Elementary.
$19,467
Per student
0%
vs Washington
Avg $19,487
+17%
vs U.S.
Avg $16,593
Revenue mix
Local 24.4%
State 64.2%
Federal 11.4%
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 Endeavour Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Kamiak High School | Larger | Similar economic need | Higher S:T ratio |
| Mariner High School | Larger | Higher economic need | Higher S:T ratio |
| Voyager Middle School | Larger | Higher economic need | Higher S:T ratio |
| Olympic View Middle School | Larger | Higher economic need | Higher S:T ratio |
| Harbour Pointe Middle School | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to Endeavour Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,384
- Students per teacher
- 25.6:1
- Resource Index
- 34/100
- Enrollment
- 2,106
- Students per teacher
- 20.1:1
- Resource Index
- 30/100
- Enrollment
- 902
- Students per teacher
- 19.2:1
- Resource Index
- 45/100
- Enrollment
- 851
- Students per teacher
- 20.3:1
- Resource Index
- 43/100
- Enrollment
- 803
- Students per teacher
- 17.1:1
- Resource Index
- 50/100
Similar elementary schools in Mukilteo
1 comparable elementary schools (grades K-5) serving the same city.
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 (~436 students)
Similar student-teacher ratio (~15.6:1)
Next steps
Verify locally before acting on Endeavour Elementary's federal record.
- Compare Endeavour Elementary against another school. Compare schools
- Mukilteo 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 Endeavour Elementary
How many students attend Endeavour Elementary?
Endeavour Elementary has 436 students enrolled. It is an elementary school in Mukilteo, WA.
What is the student-teacher ratio at Endeavour Elementary?
The student-teacher ratio at Endeavour Elementary is 15.6:1, which is 11% lower than the Washington average of 17.6:1 and 1% 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 Endeavour Elementary?
20.6% of students at Endeavour Elementary are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of Endeavour Elementary?
The largest demographic group at Endeavour Elementary is White at 41.6% of enrollment, in Mukilteo, WA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 71.1/100.
What is the Resource Investment Index for Endeavour Elementary?
Endeavour Elementary has a Resource Investment Index of 51/100 (higher 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 Endeavour Elementary rank among public schools in Mukilteo?
By Resource Investment Index, Endeavour Elementary ranks #2 of 7 public schools in Mukilteo, WA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Mukilteo on the city page.
Is Endeavour Elementary a good school?
Endeavour Elementary earns 51/100 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 Mukilteo School District?
Besides Endeavour Elementary, Mukilteo School District also operates Kamiak High School (2,384 students), Mariner High School (2,106 students), and Voyager Middle School (902 students). See the Mukilteo 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.