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SCHOOL COMMUNITY·SUMMIT PUBLIC SCHOOL: SIERRA·NCES 530033403510

Summit Public School: Sierra

1025 S King St, Seattle, WA 98104 · (206) 453-2520 · King County
GRADES 09–12HIGH11-CITYCHARTERREGULAR SCHOOL214 STUDENTS
Enrollment
214
High
STATE 573
Student : Teacher
15.3:1
14 FTE teachers
STATE 21.6:1
Free / Reduced Lunch
38%
82 students
STATE 51%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Grade 9
43
Grade 10
59
Grade 11
50
Grade 12
62
Student demographics
White
8841%
STATE 47%
Hispanic
2813%
STATE 27%
Black
5626%
STATE 5%
Asian
84%
STATE 9%
Two+
2612%
STATE 9%
Native American
10%
STATE 1%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
12860%
Female
7937%

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Test scores

Smarter Balanced + WCAS 2024-25 . % Met or Exceeded Standard
English Language Arts
50.0%
WA avg 58.4% . -16.3pp since 2017
Math
23.3%
WA avg 51.2% . -12.6pp since 2017

What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 50 of every 100 students at this school read and write at grade level and about 23 of 100 do math at grade level. Across all Washington schools, those numbers are about 58 and 51. Reading and writing scores are down about 16 points since 2017, while math scores are down about 13 points.

Source: Smarter Balanced + WCAS. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
45.4%
composite math + reading, all grades
Predicted
54.5%
based on WA schools with similar FRL share
Beats by
-9.1pp
below demographic expectation

What this means: About 45% of students here test proficient in math and reading, compared with the roughly 55% 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 →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
214
-83 (-28%) vs 2017
Student : Teacher
15.3:1
was 148.5:1
% White
41%
was 26%
% Hispanic
13%
was 9%
% Black
26%
was 41%
% Asian
4%
was 10%
Source: NCES Common Core of Data

About Summit Public School: Sierra

Summit Public School: Sierra is a four-year high school of very small scale in Seattle, Washington, part of Summit Public School: Sierra, hosting 214 students in grades 9 through 12. Compared to the state average of about 573 students per school, that is 63% smaller than typical.

Summit Public School: Sierra is the operating authority for Summit Public School: Sierra, handling staffing, calendars, and reporting to the state department of education.

In terms of who attends, Summit Public School: Sierra reports that the most-represented group is White (41%), with the rest of the student body spread across multiple groups; the rest looks like 26% Black, 13% Hispanic, 12% multiracial, 4% Asian. That is meaningfully less White than the county at large, where the share is closer to 55%.

Looking at the economic backdrop, Summit Public School: Sierra lists 14 full-time-equivalent teachers, putting the student-to-teacher ratio at about 15.3:1. The state averages around 21.6:1, so this campus is tighter than the state norm typical. About 38% of enrolled students meet the income threshold for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal.

On a residual basis (actual vs predicted given the student mix), Summit Public School: Sierra sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 54.5%; this one delivers 45.4%.

In the surrounding community, ACS estimates for King County put the typical household earns roughly $124,746 per year, about 57% of the adult population holds a bachelor's degree or above, and the poverty rate sits near 5%. In all, King County runs 544 public schools (combined enrollment of about 278,492 students), of which Summit Public School: Sierra is one.

Nearest neighbor: Bailey Gatzert Elementary School, around 0.3 miles off. 8 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts Summit Public School: Sierra at 4th of 6; the average score across the group is 52.4%.

Summit Public School: Sierra operates from an inner-city location. Summit Public School: Sierra operates as a public charter school, meaning it is publicly funded but governed independently of the surrounding district's traditional schools.

Looking at the recent track record. Summit Public School: Sierra's enrollment has decreased 28% since 2018, when it stood at 297 (now 214). Over the same period, the White share edged up from 26% to 41%. Class-load math has narrowed: from 148.5:1 in 2018 to 15.3:1 in 2025.

Inside the community feed, the page collects discussion, questions, and updates around pickup logistics, teacher feedback, and after-school programs. Members of the school community can share what they know.

King County at a glance

View full county profile
Population
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

School name
Summit Public School: Sierra
District
Summit Public School: Sierra
Address
1025 S King St, Seattle, WA 98104
Phone
(206) 453-2520
County
King County
Level
High
Grade range
09–12
Total enrollment
214
Teachers (FTE)
14
Student–teacher ratio
15.3:1
Free/Reduced lunch
82 (38%)
Locale
11-City: Large
NCES ID
530033403510
Charter school
Yes
Virtual school
No

Related schools

Other schools in Seattle
Nearby schools

Frequently asked questions

About Summit Public School: Sierra
How large is Summit Public School: Sierra?
Summit Public School: Sierra enrolls approximately 214 students in grades 09-12.
Is Summit Public School: Sierra an elementary, middle, or high school?
Summit Public School: Sierra is a high school covering grades 09-12.
How many teachers does Summit Public School: Sierra have?
Summit Public School: Sierra employs 14 FTE teachers, for a student-to-teacher ratio of 15.3:1.
What is the student diversity at Summit Public School: Sierra?
Student demographics at Summit Public School: Sierra are roughly 41% White, 13% Hispanic, 26% Black, 4% Asian, 12% Two or more.
What district is Summit Public School: Sierra in?
Summit Public School: Sierra is part of Summit Public School: Sierra.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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