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SCHOOL COMMUNITY·RENTON SCHOOL DISTRICT·NCES 530723002564

Dimmitt Middle School

12320 80th Ave S, Seattle, WA 98178 · (425) 204-2800 · King County
GRADES 06–08MIDDLE21-SUBURBTITLE IREGULAR SCHOOL605 STUDENTS
Enrollment
605
Middle
DISTRICT 770 · STATE 577
Student : Teacher
17.6:1
34 FTE teachers
DISTRICT 20.6:1 · STATE 18.9:1
Free / Reduced Lunch
62%
377 students
DISTRICT 52% · 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
Grade 6
211
Grade 7
186
Grade 8
208
Student demographics
White
11%
DISTRICT 21% · STATE 47%
Hispanic
28%
DISTRICT 29% · STATE 27%
Black
23%
DISTRICT 13% · STATE 5%
Asian
26%
DISTRICT 25% · STATE 9%
Two+
8%
DISTRICT 10% · STATE 9%
Native American
n/r
Pacific Islander
3%
DISTRICT 1% · STATE 2%
n/r: not reliably reported by NCES for this school. Hispanic, Pacific Islander, and Native American enrollment are systematically under-reported in the source data.
Gender split
Male
53%
Female
47%

Discussions

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Test scores

Smarter Balanced + WCAS 2024-25 . % Met or Exceeded Standard
English Language Arts
38.7%
WA avg 58.4% . -7.4pp since 2014
Math
27.9%
WA avg 51.2% . -5.6pp since 2014
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
27.7%
composite math + reading, all grades
Predicted
38.4%
based on WA schools with similar FRL share
Beats by
-10.7pp
below demographic expectation
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
605
-40 (-6%) vs 2017
Student : Teacher
17.6:1
was 17.1:1
% White
11%
was 9%
% Hispanic
28%
was 19%
% Black
23%
was 34%
% Asian
26%
was 25%
Source: NCES Common Core of Data

About Dimmitt Middle School

Dimmitt Middle School operates as a mid-tier intermediate school in Seattle, Washington, run under Renton School District. Current enrollment sits at 605 students spanning grades 6 through 8.

Dimmitt Middle School is one of 29 schools operated by Renton School District, a district that teaches 14,873 students overall.

On the student-mix side, Dimmitt Middle School shows that 28% of students identify as Hispanic, with the remaining enrollment distributed across several groups. Other groups include 26% Asian, 23% Black, 11% White, 8% multiracial. That is meaningfully more Hispanic than the county at large, where the share is closer to 11%.

On the resource side, The school reports having 34 full-time-equivalent teachers, for a student-teacher ratio near 17.6:1. That figure is tighter than the state norm's 18.9:1 average. Around 62% of the student body qualifies for free or reduced-price meals, a commonly cited indicator of low-income enrollment. Set against King County (around 38%), the school's rate is noticeably above typical.

On a demographically-adjusted basis, Dimmitt Middle School is in the bottom 10% of Washington public schools. The BeatsExpectations model predicts schools with this FRL share to land around 38.4%; Dimmitt Middle School posts 27.7%, -10.7 points below that line.

In the area at large, community-level numbers for King County indicate median household earnings sit near $124,746, roughly 57% of adults have completed at least a four-year degree, and the poverty rate sits near 5%. In all, King County runs 544 public schools (combined enrollment of about 278,492 students), of which Dimmitt Middle School is one.

Nearest neighbor: Bryn Mawr Elementary School, around 0.4 miles off. Counting just inside five miles, 8 other public schools cluster around Dimmitt Middle School. Ranking that nearby cluster on reported proficiency puts Dimmitt Middle School at 6th of 7; the average score across the group is 39.0%.

Dimmitt Middle School operates from a residential location.

Looking at the recent track record. Over the past 7-year window, the student count fell 6%: 645 students in 2018 compared to 605 in 2025. Black enrollment moved from 34% to 23% across the same window.

Inside the community feed, recent activity here tends to focus on fundraisers, lost-and-found posts, and report-card season. Contributors range from current parents to recent graduates and teachers.

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
Dimmitt Middle School
District
Renton School District
Address
12320 80th Ave S, Seattle, WA 98178
Phone
(425) 204-2800
County
King County
Level
Middle
Grade range
06–08
Total enrollment
605
Teachers (FTE)
34
Student–teacher ratio
17.6:1
Free/Reduced lunch
377 (62%)
Locale
21-Suburb: Large
NCES ID
530723002564
Charter school
No
Virtual school
No

Related schools

Other schools in Renton School District
Other schools in Seattle
Nearby schools

Frequently asked questions

About Dimmitt Middle School
What is the total enrollment at Dimmitt Middle School?
Dimmitt Middle School enrolls approximately 605 students in grades 06-08.
Is Dimmitt Middle School an elementary, middle, or high school?
Dimmitt Middle School is a middle school covering grades 06-08.
How many students per teacher at Dimmitt Middle School?
Approximately 17.6:1 students per teacher at Dimmitt Middle School.
How diverse is Dimmitt Middle School?
Dimmitt Middle School reports a student body of 11% White, 28% Hispanic, 23% Black, 26% Asian, 8% Two or more.
Who oversees Dimmitt Middle School?
Dimmitt Middle School is overseen by Renton 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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