SchoolRow
#259

Dimmitt Middle School

Seattle, WA · Renton School District

Regular public school · Grades 6-8 · Suburb, large

259th of 381 Washington middle schools statewide · better than 32% Improving

12320 80th Ave S, Seattle, WA 98178

(425)204-2800NCES ID 530723002564Directory 202324

630
Students
2023–24 enrollment
17:1
Student / teacher ratio
64%
Free / reduced-price lunch
low-income indicator
33.4%
Chronically absent
WA average 27%

SchoolRow ranks Dimmitt Middle School 259th of 381 Washington middle schools for 2024–25, based on WA Smarter Balanced / WCAS 2024–25 English and Math results — better than 32% of middle schools statewide. Its statewide percentile went from 16th in 2019 to 32th in 2025 — improving.

Statewide percentile by year
25%50%75%32%201920202025no testing 2020–21

Percent meeting or exceeding the state standard, WA Smarter Balanced / WCAS 2024–25 · 584 students tested

English Language Arts
Dimmitt Middle School
39%
WA average
51%
Math
Dimmitt Middle School
28%
WA average
41%
Science
Dimmitt Middle School
34%
WA average
43%
English Language Arts over time Dimmitt Middle School WA average
25%50%75%39%51%201920202025no testing 2020–21
Math over time Dimmitt Middle School WA average
25%50%75%28%41%201920202025no testing 2020–21
Science over time Dimmitt Middle School WA average
25%50%75%34%43%201920202025no testing 2020–21

Racial and ethnic breakdown of 630 students (202324, NCES) — history since 1997, with comparable seven-category changes from 2010

Hispanic27%9%Asian27%Black25%9%
Hover the pie for details
categories changedHispanic 27%White 9%Asian 27%Black 25%Two or more races 9%34%21%38%19972023
GroupTrend20102023Change
Hispanic20.3%27.0% 6.7 pts
Asian27.4%26.5% 0.9 pts
Black35.9%25.2% 10.7 pts
White13.0%9.0% 4.0 pts
Two or more races2.0%8.9% 6.9 pts
Pacific Islander0.3%3.0% 2.7 pts
American Indian1.2%0.3% 0.9 pts

NCES history for this school begins in 1997. Race categories changed by 2010: earlier data combines Asian and Pacific Islander students and does not consistently identify multiracial students. The chart retains that history, while the change table uses 2010 onward.

Typical home value $668K in zip 98178 as of 2026-05 · trend since 2000

$187K$373K$560K$747K$678K200020052010201520202025

Data Provided by Zillow Group

See recently sold homes in 98178 on Zillow →

Closest same-level schools, with 2024–25 state rank · ▲▼ = points better or worse than Dimmitt Middle School

View on the map →

What school district is Dimmitt Middle School in?

Dimmitt Middle School is part of the Renton School District district in Seattle, Washington.

Is Dimmitt Middle School a good school?

SchoolRow ranks Dimmitt Middle School 259th of 381 Washington middle schools (better than 32% statewide) based on 2024–25 test results (WA Smarter Balanced / WCAS 2024–25).

What is the racial makeup of Dimmitt Middle School?

Hispanic 27%, Asian 27%, Black 25%, White 9% (630 students, 2023–24).

How much do homes near Dimmitt Middle School cost?

The typical home value in zip code 98178 is $668K as of 2026-05 (Zillow ZHVI).

Sources: state education department data (WA Smarter Balanced / WCAS 2024–25, low-income, chronic absenteeism), National Center for Education Statistics via the Urban Institute (enrollment, demographics, staffing), Zillow Group (home values). Rankings are computed by SchoolRow from state English and Math results within grade level; they measure test performance, not everything that makes a school good.