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SCHOOL COMMUNITY·ARLINGTON SCHOOL DISTRICT·NCES 530024000024

Post Middle School

1220 E. 5th St, Arlington, WA 98223 · (360) 618-6450 · Snohomish County
GRADES 06–08MIDDLE22-SUBURBTITLE IREGULAR SCHOOL645 STUDENTS
Enrollment
645
Middle
DISTRICT 611 · STATE 577
Student : Teacher
22.2:1
29 FTE teachers
DISTRICT 22.7:1 · STATE 18.9:1
Free / Reduced Lunch
46%
295 students
DISTRICT 42% · 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
215
Grade 7
218
Grade 8
212
Student demographics
White
46772%
DISTRICT 69% · STATE 47%
Hispanic
10216%
DISTRICT 19% · STATE 27%
Black
71%
DISTRICT 1% · STATE 5%
Asian
112%
DISTRICT 2% · STATE 9%
Two+
467%
DISTRICT 8% · STATE 9%
Native American
102%
DISTRICT 1% · STATE 1%
Pacific Islander
20%
DISTRICT 0% · STATE 2%
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
31048%
Female
33552%

Discussions

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Test scores

Smarter Balanced + WCAS 2024-25 . % Met or Exceeded Standard
English Language Arts
44.4%
WA avg 58.4% . -21.3pp since 2014
Math
28.4%
WA avg 51.2% . -14.8pp 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
37.1%
composite math + reading, all grades
Predicted
49.5%
based on WA schools with similar FRL share
Beats by
-12.5pp
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
645
+23 (+4%) vs 2017
Student : Teacher
22.2:1
was 20.4:1
% White
72%
was 77%
% Hispanic
16%
was 12%
% Black
1%
was 0%
% Asian
2%
was 2%
Source: NCES Common Core of Data

About Post Middle School

Located at 1220 E. 5th St, in Arlington, Washington, Post Middle School is a mid-sized middle-grades school that hosts 645 students (grades 6 through 8), one of the schools within Arlington School District.

Arlington School District runs 10 schools in total, collectively educating 5,588 students. Post Middle School is one of those campuses.

In terms of who attends, Post Middle School records that the largest single group is White, at 72% of enrollment. Other groups include 16% Hispanic, 7% multiracial. By comparison, Snohomish County as a whole is about 64% White, so the school skews considerably more White than its surroundings.

On the income-and-resources front, On paper, Post Middle School has 29 full-time-equivalent teachers, translating to a class-load average of around 22.2:1. The state averages around 18.9:1, so this campus is higher than the state norm typical. Roughly 46% of students at Post Middle School qualify for free or reduced-price lunch, often used as a Title I proxy.

With demographic context factored in, Post Middle School is in the bottom 10% of Washington public schools. The BeatsExpectations model predicts schools with this FRL share to land around 49.5%; Post Middle School posts 37.1%, -12.5 points below that line.

In the broader community, census data for Snohomish County shows median household income runs about $111,246, 38% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 6%. Across Snohomish County's 227 public schools (combined enrollment of about 118,688 students), Post Middle School is one campus in the mix.

Nearest neighbor: Eagle Creek Elementary, around 0.2 miles off. Counting just inside five miles, 8 other public schools cluster around Post Middle School. Ranking that nearby cluster on reported proficiency puts Post Middle School at 7th of 7; the average score across the group is 46.7%.

The campus sits in a residential setting.

Looking at the recent track record. Post Middle School's enrollment has climbed 4% since 2018, when it stood at 622 (now 645). White enrollment moved from 77% to 72% across the same window. The student-to-teacher ratio rose from 20.4:1 in 2018 to 22.2:1 today.

In the discussion threads here, the feed for Post Middle School typically covers sports schedules, lunch menu changes, and school spirit week. Posting is open to anyone connected to the school.

Snohomish County at a glance

View full county profile
Population
844,430
Census ACS
Median income
$111,246
Household, ACS
Bachelor's+
38%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
227
118,688 students

Quick facts

School name
Post Middle School
District
Arlington School District
Address
1220 E. 5th St, Arlington, WA 98223
Phone
(360) 618-6450
County
Snohomish County
Level
Middle
Grade range
06–08
Total enrollment
645
Teachers (FTE)
29
Student–teacher ratio
22.2:1
Free/Reduced lunch
295 (46%)
Locale
22-Suburb: Mid-size
NCES ID
530024000024
Charter school
No
Virtual school
No

Related schools

Other schools in Arlington School District
Other schools in Arlington
Nearby schools

Frequently asked questions

About Post Middle School
What is the total enrollment at Post Middle School?
Post Middle School enrolls approximately 645 students in grades 06-08.
What age range does Post Middle School serve?
Post Middle School serves students from grade 06 through grade 08.
How many students per teacher at Post Middle School?
Approximately 22.2:1 students per teacher at Post Middle School.
What is the racial breakdown of students at Post Middle School?
At Post Middle School, the student body is approximately 72% White, 16% Hispanic, 1% Black, 2% Asian, 7% Two or more.
What district is Post Middle School in?
Post Middle School is part of Arlington School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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