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What's one community event at Chinook Middle School more people should show up to?
Community prompt from u/allk12. Replies below.
Enrollment
620
Middle
DISTRICT 656 · STATE 577
SCHOOL COMMUNITY·HIGHLINE SCHOOL DISTRICT·NCES 530354000524
Chinook Middle School
18650 42nd Ave S, SeaTac, WA 98188 · (206) 631-5700 · King County
GRADES 06–08MIDDLE21-SUBURBTITLE IREGULAR SCHOOL620 STUDENTS
D
allk12 Grade
Scored higher than 13% of Washington public middle schools
- DTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- CBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- CThree-year trend Change in reading and math proficiency over the last three test years.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Washington public middle schools
Student : Teacher
17.4:1
36 FTE teachers
DISTRICT 19.0:1 · STATE 18.9:1
Free / Reduced Lunch
73%
452 students
DISTRICT 65% · STATE 51%
Community
1
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 6 | 205 | 33% |
| Grade 7 | 210 | 34% |
| Grade 8 | 205 | 33% |
Student demographics
76%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 75% · 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
31.3%
WA avg 58.4% . -5.1pp since 2014
Math
15.8%
WA avg 51.2% . -19.7pp since 2014
What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 31 of every 100 students at this school read and write at grade level and about 16 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 5 points since 2014, while math scores are down about 20 points.
Smarter Balanced + WCAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 31.3% | 15.8% |
| 2023-24 | 26.6% | 14.2% |
| 2022-23 | 21.9% | 12.8% |
| 2021-22 | 31.6% | 14.8% |
| 2018-19 | 54.7% | 28.4% |
| 2017-18 | 48.5% | 32.4% |
| 2016-17 | 43.2% | 32.1% |
| 2015-16 | 37.5% | 30.1% |
| 2014-15 | 36.5% | 35.5% |
% 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
22.9%
composite math + reading, all grades
Predicted
31.3%
based on WA schools with similar FRL share
Beats by
-8.4pp
below demographic expectation
What this means: About 23% of students here test proficient in math and reading, compared with the roughly 31% 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 Chinook Middle School
Chinook Middle School's state test result (22.9% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Chinook Middle School this school | 620 | 72.9% | 22.9% |
| Pacific Middle School Des Moines | 604 | 74.3% | 20.4% |
| First Creek Middle School Tacoma | 584 | 78.1% | 20.2% |
| Mill Creek Middle School Kent | 866 | 73.0% | 12.1% |
| Gray Middle School Tacoma | 510 | 73.7% | 19.1% |
| Sacajawea Middle School FEDERAL WAY | 668 | 77.7% | 28.6% |
Matched among Washington middle 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 Chinook Middle School ranks
Among middle schools| Measure | This school | In Washington | In King County |
|---|---|---|---|
| State test proficiency ranked highest first | 22.9% | #262 of 294 | #69 of 76 |
| Math proficiency ranked highest first | 15.8% | #322 of 357 ▲ 4 | #70 of 76 ▲ 1 |
| Reading proficiency ranked highest first | 31.3% | #297 of 357 ▲ 28 | #67 of 76 ▲ 5 |
| 3-year test score change ranked biggest gain first | +0.4pp | #192 of 290 | #51 of 75 |
| Enrollment ranked largest first | 620 | #186 of 377 | #57 of 80 |
| Students per teacher ranked fewest first | 17.4:1 | #59 of 340 | #6 of 76 |
| Diversity index ranked most diverse first | 75.6% | #36 of 340 | #21 of 76 |
| Free and reduced lunch ranked highest share first | 72.9% | #54 of 359 | #13 of 77 |
| Enrollment change since 2017-18 ranked fastest growth first | +10.9% | #51 of 130 | #16 of 33 |
Ranked against other public middle 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
620
-92 (-13%) vs 2020
+25% since 1990-91, when it was 497
Student : Teacher
17.4:1
was 17.4:1
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 | 620 | 35.7 | 17.4:1 | 73% (452) |
| 2023-24 | 603 | 37.9 | 15.9:1 | 77% (463) |
| 2022-23 | 599 | 36.3 | 16.5:1 | 78% (470) |
| 2020-21 | 712 | 41 | 17.4:1 | 77% (545) |
| 2017-18 | 559 | 32.3 | 17.3:1 | 79% (441) |
| 2015-16 | 608 | 39 | 15.6:1 | 86% (521) |
| 2010-11 | 524 | 31 | 16.9:1 | 66% (344) |
| 2000-01 | 612 | 30 | 20.4:1 | N/A |
| 1990-91 | 497 | 24 | 20.7:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Chinook Middle School.
Since 2017-18: students up 11% (559 to 620); teachers up 10% (32.3 to 35.7).
About Chinook Middle School
Chinook Middle School is a mid-sized middle school located in SeaTac, Washington. It teaches 620 students in grades 6 through 8.
Chinook Middle School is part of a district of 36 schools: Highline School District, with 18,072 students.
Of every 100 students at Chinook Middle School, about 40 are Hispanic, the largest group. It is also 19% Black, 16% Asian, 11% White, and 8% Pacific Islander. For comparison, the population of King County is roughly 11% Hispanic. On a 0 to 100 scale, the school's diversity index is 76, compared with 70 nationally.
Chinook Middle School reported 35.7 full-time-equivalent teachers in 2024-25, a ratio of 17.4:1. Middle schools in Washington have an average ratio of 18.9:1. Roughly 73% of students at Chinook Middle School can receive free or reduced-price lunch. That rate is above the 38% average among public schools in King County.
Chinook Middle School holds a D allk12 Grade, placing it above 13% of Washington public middle schools.
The model predicts 31.3% for a school in Washington with Chinook Middle School's free or reduced-price lunch share. Chinook Middle School posts 22.9%.
Five-year Census Bureau estimates for King County show that median household income comes to about $124,746, a bachelor's degree or higher is held by about 57% of adults, and the poverty rate is about 5%. The county's public schools total 544, with about 278,492 students.
About 0.1 miles separate Chinook Middle School from the closest public school, Tyee High School. A five-mile radius around the school includes at least 8 other public schools. Chinook Middle School ranks 2nd of 5 among nearby schools on average proficiency, with 22.9% against a local average of 21.4%.
The federal government classifies Chinook Middle School's location as Suburb: Large.
The school's student count decreased 13% between the 2020-21 and 2024-25 school years.
This page is a place to ask questions and share updates about athletics, class schedules, and weather closures at Chinook Middle School. Parents, students, alumni, and staff are welcome to post.
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 Highline School District
- Mount Rainier High SchoolHigh · 1,846 students
- Highline High SchoolHigh · 1,423 students
- Evergreen High SchoolHigh · 1,080 students
- Glacier Middle SchoolMiddle · 803 students
- Cascade Middle SchoolMiddle · 671 students
- Tyee High SchoolHigh · 644 students
Other schools in SeaTac
- Glacier Middle SchoolMiddle · 803 students
- River Ridge ElementaryElementary · 697 students
- Tyee High SchoolHigh · 644 students
- Bow Lake ElementaryElementary · 524 students
- McMicken Heights ElementaryElementary · 484 students
- Madrona ElementaryElementary · 317 students
Other Chinook Middle schools
3 other US public schools in 1 state are named Chinook Middle. Chinook Middle School is the 4th largest of the 4.
- Chinook Middle SchoolKennewick, WA · 950 students
- Chinook Middle SchoolBellevue, WA · 752 students
- Chinook Middle SchoolLacey, WA · 746 students
Nearby schools
- Tyee High School0.1 mi · 644
- Bow Lake Elementary0.3 mi · 524
- Valley View Early Childhood Center0.7 mi · 225
- Madrona Elementary1.2 mi · 317
- McMicken Heights Elementary1.3 mi · 484
- Puget Sound Skills Center2.0 mi · 3
Frequently asked questions
About Chinook Middle SchoolHow large is Chinook Middle School?
Chinook Middle School enrolls approximately 620 students in grades 06-08.
What age range does Chinook Middle School serve?
Chinook Middle School serves students from grade 06 through grade 08.
How many teachers does Chinook Middle School have?
Chinook Middle School employs 36 FTE teachers, for a student-to-teacher ratio of 17.4:1.
What is the racial breakdown of students at Chinook Middle School?
At Chinook Middle School, the student body is approximately 11% White, 40% Hispanic, 19% Black, 16% Asian, 6% Two or more.
Is Chinook Middle School public or private?
Chinook Middle School is a public K-12 school, overseen by Highline School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.