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SCHOOL COMMUNITY·FEDERAL WAY SCHOOL DISTRICT·NCES 530282000434

Decatur High School

2800 SW 320TH ST, FEDERAL WAY, WA 98023 · (253) 945-5200 · King County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL1,352 STUDENTS
F
allk12 Grade
Scored higher than 1% of Washington public high schools
  • FTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • DBeats 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 high schools

Enrollment
1,352
High
DISTRICT 711 · STATE 573
Student : Teacher
20.9:1
65 FTE teachers
DISTRICT 21.6:1 · STATE 21.6:1
Free / Reduced Lunch
65%
876 students
DISTRICT 72% · STATE 51%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 933625%
Grade 1030623%
Grade 1136827%
Grade 1234225%
Student demographics
79%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 79% · STATE 68% · US 70%
White
29122%
DISTRICT 19% · STATE 47% · US 43%
Hispanic
44833%
DISTRICT 33% · STATE 27% · US 30%
Black
16612%
DISTRICT 15% · STATE 5% · US 15%
Asian
15111%
DISTRICT 14% · STATE 9% · US 6%
Two+
17913%
DISTRICT 12% · STATE 9% · US 5%
Native American
50%
DISTRICT 0% · STATE 1% · US 1%
Pacific Islander
1028%
DISTRICT 6% · STATE 2% · US 0%
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
Male
69651%
Female
64648%

Discussions

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Test scores

Smarter Balanced + WCAS 2024-25 . % Met or Exceeded Standard
English Language Arts
36.5%
WA avg 58.4% . +31.7pp since 2014
Math
11.7%
WA avg 51.2% . +10.5pp since 2014

What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 37 of every 100 students at this school read and write at grade level and about 12 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 32 points since 2014, while math scores are up about 10 points.

Smarter Balanced + WCAS results by year

School yearEnglish Language ArtsMath
2024-2536.5%11.7%
2023-2438.5%10.1%
2022-2339.4%12.1%
2021-2241.4%13.7%
2018-1947.0%18.8%
2017-1853.7%22.4%
2016-1712.0%10.2%
2015-1613.6%5.4%
2014-154.8%1.2%
% 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 · methodology
Tier
UNDERPERFORMING
Bottom 10% of WA schools after controlling for student poverty
Actual proficiency
20.1%
composite math + reading, all grades
Predicted
36.7%
based on WA schools with similar FRL share
Beats by
-16.6pp
below demographic expectation

What this means: About 20% of students here test proficient in math and reading, below the roughly 37% typical for Washington schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.

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 Decatur High School

Decatur High School's state test result (20.1% proficient) is higher than 0 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Decatur High School this school1,35264.8%20.1%
Franklin Pierce High School
TACOMA
97764.4%36.8%
Auburn Senior High School
AUBURN
1,91863.2%29.5%
Washington High School
Tacoma
98969.1%32.5%
Mariner High School
Everett
2,10662.5%40.5%
Mount Tahoma High School
Tacoma
1,41069.6%24.9%
Matched among Washington high 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 Decatur High School ranks

Among high schools
MeasureThis schoolIn WashingtonIn King County
State test proficiency
ranked highest first
20.1%#262 of 271#55 of 59
Math proficiency
ranked highest first
11.7%#300 of 321
▲ 6
#55 of 59
▲ 2
Reading proficiency
ranked highest first
36.5%#288 of 327
▲ 5
#51 of 61
▲ 3
3-year test score change
ranked biggest drop first
-3.4pp#83 of 259#20 of 57
Enrollment
ranked largest first
1,352#114 of 570#39 of 97
Students per teacher
ranked fewest first
20.9:1#173 of 311#33 of 67
Diversity index
ranked most diverse first
79.0%#7 of 316#3 of 67
Free and reduced lunch
ranked highest share first
64.8%#88 of 386#17 of 76
Enrollment change since 2017-18
ranked steepest decline first
-3.6%#134 of 164#29 of 34
Ranked against other public high 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 2024-25
Enrollment
1,352
-33 (-2%) vs 2020
+13% since 1990-91, when it was 1,193
Student : Teacher
20.9:1
was 22.0:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,35264.520.9:165% (876)
2023-241,35464.421.0:164% (867)
2022-231,32758.722.6:164% (845)
2020-211,3856322.0:153% (734)
2017-181,40368.720.4:149% (685)
2015-161,4076422.0:149% (692)
2010-111,4656622.2:128% (416)
2000-011,4556123.9:1N/A
1990-911,1935222.9:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Decatur High School.

Since 2017-18: students down 4% (1,403 to 1,352); teachers down 6% (68.7 to 64.5).

About Decatur High School

Decatur High School is a large high school in FEDERAL WAY, Washington. The school serves grades 9 through 12. Enrollment is 1,352 students. That is 136% bigger than the average of about 573 students for high schools in Washington.

Federal Way School District is made up of 43 schools with 22,250 students in all.

At Decatur High School, Hispanic students make up the biggest share, 33%. The remaining students are 22% White, 13% multiracial, 12% Black, and 11% Asian. Among people living in King County, the Hispanic share is about 11%. On a 0 to 100 scale, the school's diversity index is 79, compared with 70 nationally.

Classroom staffing at Decatur High School totals 64.5 full-time-equivalent teachers, and the student-to-teacher ratio is 20.9:1. It is about the same as the 21.6:1 average for high schools in Washington. Free or reduced-price lunch eligibility at Decatur High School is about 65%. By comparison, the figure for public schools in King County is 38%.

Decatur High School holds an F allk12 Grade, placing it above 1% of Washington public high schools.

A school in Washington with Decatur High School's free or reduced-price lunch share would be expected to score about 36.7%. Decatur High School scores 20.1%.

For King County, Census Bureau data show median household income comes to about $124,746, the share of adults with a bachelor's degree or higher is 57%, and about 5% of people live in poverty. There are 544 public schools in the county, enrolling about 278,492, Decatur High School among them.

Olympic View Elementary School is about 0.5 miles away, making it the nearest public school. Within five miles of Decatur High School, there are at least 8 other public schools. The average proficiency across nearby scored schools is 35.0%; Decatur High School's is 20.1%, ranking 8th of 8.

Decatur High School has an NCES locale of Suburb: Large.

From 2020-21 to 2024-25, enrollment held near 1,352, starting from 1,385. The ratio of students to teachers went from 22.0:1 to 20.9:1 over the same years.

The discussion board for Decatur High School is open to topics like special education services, counseling, and support programs. Teachers and staff are welcome to share updates too.

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
Decatur High School
District
Federal Way School District
Address
2800 SW 320TH ST, FEDERAL WAY, WA 98023
Phone
(253) 945-5200
County
King County
Level
High
Grade range
09–12
Total enrollment
1,352
Teachers (FTE)
65
Student–teacher ratio
20.9:1
Free and reduced lunch
876 (65%)
Locale
21-Suburb: Large
NCES ID
530282000434
Charter school
No
Virtual school
No

Related schools

Other schools in Federal Way School District
Other schools in FEDERAL WAY
Other Decatur High schools

4 other US public schools in 5 states are named Decatur High. Decatur High School is the 2nd largest of the 5.

Nearby schools

Frequently asked questions

About Decatur High School
How large is Decatur High School?
Decatur High School enrolls approximately 1,352 students in grades 09-12.
What age range does Decatur High School serve?
Decatur High School serves students from grade 09 through grade 12.
How many students per teacher at Decatur High School?
Approximately 20.9:1 students per teacher at Decatur High School.
What is the student diversity at Decatur High School?
Student demographics at Decatur High School are roughly 22% White, 33% Hispanic, 12% Black, 11% Asian, 13% Two or more.
Who oversees Decatur High School?
Decatur High School is overseen by Federal Way School District in King County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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