Enrollment
145
Washington · 2024-25 NCES data
Elementary school (grades K-5) · Seattle, WA
Sanislo Elementary School
Federal NCES profile for Sanislo Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 64/100.
2024-25 NCES dataElementary school (grades K-5)NCES 530771001244
👥 S:T ratio 58
🌟 Gifted program 70
📋 Attendance 64
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Sanislo Elementary School earns 64/100 on the Resource Investment Index, with class sizes smaller than 94% of Washington schools. It is also more racially and ethnically mixed than most Washington schools.
- #12 of 32
- elementary schools in Seattle · Resource Index
- 64
- Resource Index · Higher
- 10.4:1
- small classes for Washington
- 58.4%
- free-lunch eligible
Sanislo Elementary School has class sizes smaller than 94% of Washington schools. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, Sanislo Elementary School ranks #12 of 32 elementary schools in Seattle, WA.
School address
District: Seattle School District No. 1 · Washington
NCES ID 530771001244 Verify on NCES CCD record →
Teachers (FTE)
14.0
Federal CCD staff survey
Students per teacher
10.4:1
vs 17.6:1 Washington avg
-41% vs state
Free-lunch eligible
58.4%
vs 45.0% Washington avg
+30% vs state
Student-teacher ratio in context
How Sanislo Elementary School compares with Washington and U.S. medians
What stands out at Sanislo Elementary School
Sanislo Elementary School is a higher-need, mid-sized elementary school in Seattle, Washington, enrolling 145 students.
Classes run notably small here: at 10.4:1, Sanislo Elementary School is leaner than roughly 94% of Washington schools and 41% under the state's 17.6:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat above the state's typical profile, with 58.4% of students eligible for free meals.
Enrollment of 145 puts it in the smaller third of Washington schools by headcount.
Its Resource Investment Index outscores 95% of the 2,394 Washington schools with a score on record, a top-tier result on this measure.
Among 114 similarly sized, similarly resourced-need Washington schools statewide, it ranks #9, a top-tier result once campus size and economic need are matched.
Its student body is led by African American (28%) and Hispanic or Latino (22%), more mixed than most schools in the state (diversity index 79/100).
14.5% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Seattle's elementary schools, it stands alongside Hazel Wolf K-8 (660 students): Sanislo Elementary School is smaller than that campus by headcount and runs leaner classes (10.4:1 vs 16.1:1).
Seattle School District No. 1 also operates Lincoln High School (1,770 students) and Ballard High School (1,697 students) alongside Sanislo Elementary 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 Sanislo Elementary School compares
Sanislo Elementary 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 | 10.4:1 | ▼ 41% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 58.4% | ▲ 30% | 45.0% | 51.7% |
| Enrollment | 145 | top 78% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.4:1
Leaner classes than 87% of US schools, among the more generously staffed nationally.
145
Bigger than 14% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
58.4%
free-lunch eligible
- 30% 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
10.4:1
students per teacher
- 41% below state mean
Top 6% in Washington - lower ratio than 94% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
14.5%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$20,430
per pupil, district-wide
- above Washington avg of $19,487
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 1 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.7 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 28.0%
Hispanic or Latino 22.4%
White 20.3%
Two or More 17.5%
Asian 11.9%
Largest group: African American at 28.0% of enrollment.
Student-body diversity index 78.5/100
Simpson diversity index - at 78.5, Sanislo Elementary School is more mixed than the Washington school average of 53.3.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Seattle School District No. 1, which includes Sanislo Elementary School.
$20,430
Per student
+5%
vs Washington
Avg $19,487
+23%
vs U.S.
Avg $16,593
Revenue mix
Local 40.0%
State 50.6%
Federal 9.3%
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 Sanislo Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lincoln High School | Larger | Lower economic need | Higher S:T ratio |
| Ballard High School | Larger | Lower economic need | Higher S:T ratio |
| Roosevelt High School | Larger | Lower economic need | Higher S:T ratio |
| Garfield High School | Larger | Lower economic need | Higher S:T ratio |
| West Seattle High School | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Sanislo Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,770
- Students per teacher
- 24.6:1
- Resource Index
- 46/100
- Enrollment
- 1,697
- Students per teacher
- 22.6:1
- Resource Index
- 46/100
- Enrollment
- 1,542
- Students per teacher
- 20.6:1
- Resource Index
- 46/100
- Enrollment
- 1,507
- Students per teacher
- 22.2:1
- Resource Index
- 39/100
- Enrollment
- 1,479
- Students per teacher
- 24.6:1
- Resource Index
- 35/100
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
Rainier Prep
Standard public school
359 students 15:1 students per teacher
Campbell Hill Elementary School
Standard public school
345 students 16.4:1 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 (~145 students)
Similar student-teacher ratio (~10.4:1)
Next steps
Verify locally before acting on Sanislo Elementary School's federal record.
- Compare Sanislo Elementary School against another school. Compare schools
- Seattle School District No. 1'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 Sanislo Elementary School
How many students attend Sanislo Elementary School?
Sanislo Elementary School has 145 students enrolled. It is an elementary school in Seattle, WA.
What is the student-teacher ratio at Sanislo Elementary School?
The student-teacher ratio at Sanislo Elementary School is 10.4:1, which is 41% lower than the Washington average of 17.6:1 and 34% 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 Sanislo Elementary School?
58.4% of students at Sanislo Elementary School are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of Sanislo Elementary School?
The largest demographic group at Sanislo Elementary School is African American at 28.0% of enrollment, in Seattle, WA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 78.5/100.
What is the Resource Investment Index for Sanislo Elementary School?
Sanislo Elementary School has a Resource Investment Index of 64/100 (higher 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 Sanislo Elementary School rank among elementary schools in Seattle?
By Resource Investment Index, Sanislo Elementary School ranks #12 of 32 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 Sanislo Elementary School a good school?
Sanislo Elementary School earns 64/100 on the Resource Investment Index, with class sizes smaller than 94% of Washington schools. 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 Seattle School District No. 1?
Besides Sanislo Elementary School, Seattle School District No. 1 also operates Lincoln High School (1,770 students), Ballard High School (1,697 students), and Roosevelt High School (1,542 students). See the Seattle School District No. 1 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.