Enrollment
145
Elementary
DISTRICT 346 · STATE 380
SCHOOL COMMUNITY·SEATTLE SCHOOL DISTRICT NO. 1·NCES 530771001244
Sanislo Elementary School
1812 SW MYRTLE ST, SEATTLE, WA 98106 · (206) 252-8380 · King County
GRADES KG–05ELEMENTARY11-CITYTITLE IREGULAR SCHOOL145 STUDENTS
Student : Teacher
10.7:1
14 FTE teachers
DISTRICT 14.4:1 · STATE 17.3:1
Free / Reduced Lunch
67%
97 students
DISTRICT 36% · STATE 51%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 19 | 13% |
| Grade 1 | 20 | 14% |
| Grade 2 | 29 | 20% |
| Grade 3 | 23 | 16% |
| Grade 4 | 21 | 14% |
| Grade 5 | 33 | 23% |
This year's kindergarten class (19) is 42% smaller than its 5th grade class (33).
Student demographics
79%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 73% · STATE 68% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
Smarter Balanced + WCAS 2024-25 . % Met or Exceeded StandardEnglish Language Arts
42.9%
WA avg 58.4% . +12.9pp since 2014
Math
31.4%
WA avg 51.2% . -1.9pp since 2014
What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 43 of every 100 students at this school read and write at grade level and about 31 of 100 do math at grade level. Across all Washington schools, those numbers are about 58 and 51. Reading and writing scores are up about 13 points since 2014, while math scores are down about 2 points.
Smarter Balanced + WCAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 42.9% | 31.4% |
| 2023-24 | 39.8% | 26.5% |
| 2022-23 | 34.5% | 30.9% |
| 2021-22 | 25.3% | 18.1% |
| 2018-19 | 26.5% | 29.1% |
| 2017-18 | 28.8% | 28.8% |
| 2016-17 | 27.1% | 25.8% |
| 2015-16 | 39.3% | 29.2% |
| 2014-15 | 29.9% | 33.3% |
% Met or Exceeded Standard, all students and all tested grades.
Source: Smarter Balanced + WCAS. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
36.7%
composite math + reading, all grades
Predicted
35.3%
based on WA schools with similar FRL share
Beats by
+1.4pp
above demographic expectation
What this means: About 37% of students here test proficient in math and reading, compared with the roughly 35% typical for Washington schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Washington's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Sanislo Elementary School
Sanislo Elementary School's state test result (36.7% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Sanislo Elementary School this school | 145 | 66.9% | 36.7% |
| Impact | Black River Elementary Renton | 209 | 62.7% | 27.4% |
| Impact Public Schools Tacoma | 232 | 65.9% | 42.7% |
| Sand Point Elementary Seattle | 173 | 56.1% | 45.3% |
| John Rogers Elementary School SEATTLE | 248 | 55.2% | 51.3% |
| Roxhill Elementary School SEATTLE | 289 | 59.9% | 29.1% |
Matched among Washington elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Sanislo Elementary School ranks
Among elementary schools| Measure | This school | In Washington | In King County |
|---|---|---|---|
| State test proficiency ranked highest first | 36.7% | #691 of 936 | #216 of 280 |
| Math proficiency ranked highest first | 31.4% | #850 of 1,103 ▲ 71 | #229 of 281 ▲ 15 |
| Reading proficiency ranked highest first | 42.9% | #672 of 1,102 ▲ 63 | #195 of 280 ▲ 12 |
| 3-year test score change ranked biggest gain first | +15.5pp | #20 of 928 | #7 of 274 |
| Enrollment ranked largest first | 145 | #1,135 of 1,268 | #292 of 299 |
| Free and reduced lunch ranked highest share first | 66.9% | #319 of 1,169 | #64 of 292 |
| Enrollment change since 2017-18 ranked steepest decline first | -38.6% | #40 of 778 | #20 of 220 |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
145
-50 (-26%) vs 2020
-58% since 1990-91, when it was 349
Student : Teacher
10.7:1
was 12.2:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 145 | 13.5 | 10.7:1 | 67% (97) |
| 2023-24 | 171 | 14.5 | 11.8:1 | 74% (127) |
| 2022-23 | 173 | 14.3 | 12.1:1 | 65% (113) |
| 2020-21 | 195 | 16 | 12.2:1 | 54% (105) |
| 2017-18 | 236 | 18.2 | 13.0:1 | 66% (155) |
| 2015-16 | 273 | 19 | 14.4:1 | 58% (157) |
| 2010-11 | 314 | 17 | 18.5:1 | 55% (174) |
| 2000-01 | 307 | 15 | 20.5:1 | N/A |
| 1990-91 | 349 | 15 | 23.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Sanislo Elementary School.
Since 2017-18: students down 39% (236 to 145); teachers down 26% (18.2 to 13.5).
About Sanislo Elementary School
Sanislo Elementary School is a very small elementary school that serves part of SEATTLE, Washington. It offers kindergarten through 5 and has 145 students enrolled. That is 62% below the average of about 380 students for elementary schools in Washington.
Seattle School District No. 1 has a total of 107 schools and 50,773 students, Sanislo Elementary School among them.
The student body at Sanislo Elementary School has no majority group. Black students lead at 28%. Enrollment also includes 22% Hispanic, 20% White, 17% multiracial, and 12% Asian. The school's Black share is 21 points above the 7% share among King County residents. A diversity index of 79% means there is a 79% chance two randomly chosen students at Sanislo Elementary School are from different groups.
Sanislo Elementary School has 13.5 full-time-equivalent teachers, for a student-to-teacher ratio of about 10.7:1. Elementary schools in Washington have an average ratio of 17.3:1. Eligibility for free or reduced-price lunch, often used to gauge student poverty, is 67%. For comparison, public schools in King County average 38%.
A school with Sanislo Elementary School's lunch-eligibility share in Washington is predicted to score 35.3%. Sanislo Elementary School scores 36.7%, 1.4 points above that line.
American Community Survey estimates for King County show that the median household earns about $124,746 a year, the share of adults with a bachelor's degree or higher is 57%, and roughly 5% of residents are in poverty. Across King County, 544 public schools serve about 278,492 students.
Louisa Boren STEM K-8, about 0.6 miles away, is the closest public school. A five-mile radius around the school includes at least 8 other public schools. Among the 9 closest schools with test data, this one included, Sanislo Elementary School ranks 6th on average proficiency.
The school's setting, by NCES definition, is City: Large: inside a principal city with a population of 250,000 or more.
In 2024-25, the school enrolled 145, down from 195 in 2020-21. From 2020-21 to 2024-25, the ratio dropped from 12.2:1 to 10.7:1.
The Sanislo Elementary School discussion page is a place for special education services, counseling, and support programs. Teachers and staff are welcome to share updates too.
King County at a glance
View full county profilePopulation
2,287,171
Census ACS
Median income
$124,746
Household, ACS
Bachelor's+
57%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
544
278,492 students
Quick facts
Related schools
Other schools in Seattle School District No. 1
- Lincoln High SchoolHigh · 1,770 students
- Ballard High SchoolHigh · 1,697 students
- Roosevelt High SchoolHigh · 1,542 students
- Garfield High SchoolHigh · 1,507 students
- West Seattle High SchoolHigh · 1,479 students
- Ingraham High SchoolHigh · 1,391 students
Other schools in SEATTLE
- Lincoln High SchoolHigh · 1,770 students
- Ballard High SchoolHigh · 1,697 students
- Roosevelt High SchoolHigh · 1,542 students
- Garfield High SchoolHigh · 1,507 students
- West Seattle High SchoolHigh · 1,479 students
- Ingraham High SchoolHigh · 1,391 students
Nearby schools
- Louisa Boren STEM K-80.6 mi · 437
- West Seattle Elementary School0.7 mi · 376
- David T. Denny International Middle School0.7 mi · 722
- Chief Sealth International High School0.8 mi · 1,184
- Roxhill Elementary School0.9 mi · 289
- Highland Park Elementary School1.1 mi · 300
Frequently asked questions
About Sanislo Elementary SchoolHow large is Sanislo Elementary School?
Sanislo Elementary School enrolls approximately 145 students in grades KG-05.
What grades does Sanislo Elementary School serve?
Sanislo Elementary School serves grades KG-05.
What is the student-teacher ratio at Sanislo Elementary School?
The student-to-teacher ratio at Sanislo Elementary School is approximately 10.7:1 (14 FTE teachers).
What is the racial breakdown of students at Sanislo Elementary School?
At Sanislo Elementary School, the student body is approximately 20% White, 22% Hispanic, 28% Black, 12% Asian, 17% Two or more.
Who oversees Sanislo Elementary School?
Sanislo Elementary School is overseen by Seattle School District No. 1 in King County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.