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SCHOOL COMMUNITY·SNOHOMISH SCHOOL DISTRICT·NCES 530802000540

Centennial Middle School

3000 South Machias Road, Snohomish, WA 98290 · (360) 563-4525 · Snohomish County
GRADES 07–08MIDDLE22-SUBURBREGULAR SCHOOL734 STUDENTS
Enrollment
734
Middle
DISTRICT 688 · STATE 577
Student : Teacher
21.5:1
34 FTE teachers
DISTRICT 21.9:1 · STATE 18.9:1
Free / Reduced Lunch
28%
207 students
DISTRICT 28% · 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

GradeStudentsShare
Grade 734547%
Grade 838953%
Student demographics
46%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 52% · STATE 68% · US 70%
White
52171%
DISTRICT 66% · STATE 47% · US 43%
Hispanic
12116%
DISTRICT 14% · STATE 27% · US 30%
Black
71%
DISTRICT 1% · STATE 5% · US 15%
Asian
304%
DISTRICT 10% · STATE 9% · US 6%
Two+
456%
DISTRICT 8% · STATE 9% · US 5%
Native American
51%
DISTRICT 0% · STATE 1% · US 1%
Pacific Islander
41%
DISTRICT 0% · 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
38352%
Female
35048%

Discussions

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Test scores

Smarter Balanced + WCAS 2024-25 . % Met or Exceeded Standard
English Language Arts
44.5%
WA avg 58.4% . +2.7pp since 2014
Math
38.2%
WA avg 51.2% . +5.1pp since 2014

What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 45 of every 100 students at this school read and write at grade level and about 38 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 3 points since 2014, while math scores are up about 5 points.

Smarter Balanced + WCAS results by year

School yearEnglish Language ArtsMath
2024-2544.5%38.2%
2023-2439.8%32.9%
2022-2350.3%38.9%
2021-2249.0%37.1%
2018-1965.4%51.1%
2017-1863.9%47.9%
2016-1764.1%51.5%
2015-1657.3%43.3%
2014-1541.8%33.1%
% 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
39.3%
composite math + reading, all grades
Predicted
61.3%
based on WA schools with similar FRL share
Beats by
-21.9pp
below demographic expectation

What this means: About 39% of students here test proficient in math and reading, below the roughly 61% 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 Centennial Middle School

SchoolStudentsLow-incomeProficient
Centennial Middle School this school73428.2%39.3%
View Ridge Middle School
RIDGEFIELD
66629.6%N/A
Sunset Ridge Intermediate School
Ridgefield
61627.3%N/A
Alki Middle School
VANCOUVER
59429.3%N/A
Liberty Middle School
Camas
70826.1%N/A
Kulshan Middle School
Bellingham
57528.7%60.1%
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 Centennial Middle School ranks

Among middle schools
MeasureThis schoolIn WashingtonIn Snohomish County
State test proficiency
ranked highest first
39.3%#155 of 294#17 of 32
Math proficiency
ranked highest first
38.2%#146 of 357
▲ 30
#15 of 32
no change
Reading proficiency
ranked highest first
44.5%#203 of 357
▲ 31
#22 of 32
▲ 3
3-year test score change
ranked biggest drop first
-1.7pp#55 of 290#4 of 32
Enrollment
ranked largest first
734#114 of 377#14 of 33
Students per teacher
ranked fewest first
21.5:1#287 of 340#21 of 32
Diversity index
ranked most diverse first
46.2%#256 of 340#28 of 32
Free and reduced lunch
ranked highest share first
28.2%#306 of 359#28 of 32
Enrollment change since 2017-18
ranked steepest decline first
-7.0%#132 of 192#10 of 13
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 2024-25
Enrollment
734
-36 (-5%) vs 2020
+9% since 2000-01, when it was 675
Student : Teacher
21.5:1
was 20.8:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2573434.221.5:128% (207)
2023-2473533.621.9:128% (207)
2022-2372034.321.0:128% (204)
2020-217703720.8:124% (184)
2017-1878934.522.9:123% (179)
2015-167523223.5:126% (198)
2010-118543623.7:126% (225)
2000-016752824.1:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Centennial Middle School.

Since 2017-18: students down 7% (789 to 734); teachers down 1% (34.5 to 34.2).

About Centennial Middle School

Centennial Middle School is a middle-grades school in Snohomish, Washington, and it is part of Snohomish School District. Enrollment in 2024-25 was 734 students in grades 7 through 8. Against the 577-student average for middle schools in Washington, enrollment here is 27% higher.

Snohomish School District has 9,732 students in 18 schools, and Centennial Middle School is one of those schools.

White students account for 71% of enrollment at Centennial Middle School. Smaller groups are 16% Hispanic, 6% multiracial, and 4% Asian. Centennial Middle School has a diversity index of 46%, compared with 70% for all US public school students.

Staffing totals 34.2 full-time-equivalent teachers, and the student-to-teacher ratio is 21.5:1. That ratio is over the 18.9:1 average for middle schools in Washington. The free or reduced-price lunch rate at Centennial Middle School is 28%. That is 13 points below the 41% average for public schools in Snohomish County.

The school's average proficiency rate on state tests, 39.3%, is 21.9 points below the 61.3% the model predicts from its free or reduced-price lunch share. That result is in the bottom 10% of Washington schools.

Recent Census Bureau figures for Snohomish County show that median household income is about $111,246, the share of adults with a bachelor's degree or higher is 38%, and about 6% of people live in poverty. Centennial Middle School is one of 227 public schools in Snohomish County, which together enroll about 118,688 students.

The nearest public school is Glenwood Elementary, at about 1.2 miles. There are at least 8 other public schools within five miles. On state test proficiency, Centennial Middle School ranks 8th in a group of 8 nearby schools.

For locale, NCES codes Centennial Middle School as Suburb: Mid-size.

Between 2020-21 and 2024-25, the student count dropped from 770 to 734.

Threads on this page can be about school events, clubs, and volunteer needs. Anyone with firsthand experience at this school can post or comment.

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
Centennial Middle School
District
Snohomish School District
Address
3000 South Machias Road, Snohomish, WA 98290
Phone
(360) 563-4525
County
Snohomish County
Level
Middle
Grade range
07–08
Total enrollment
734
Teachers (FTE)
34
Student–teacher ratio
21.5:1
Free and reduced lunch
207 (28%)
Locale
22-Suburb: Mid-size
NCES ID
530802000540
Charter school
No
Virtual school
No

Related schools

Other schools in Snohomish School District
Other schools in Snohomish
Other Centennial Middle schools

12 other US public schools in 11 states are named Centennial Middle. Centennial Middle School is the 7th largest of the 13.

Nearby schools

Frequently asked questions

About Centennial Middle School
How many students attend Centennial Middle School?
Centennial Middle School enrolls approximately 734 students in grades 07-08.
What age range does Centennial Middle School serve?
Centennial Middle School serves students from grade 07 through grade 08.
How many teachers does Centennial Middle School have?
Centennial Middle School employs 34 FTE teachers, for a student-to-teacher ratio of 21.5:1.
What is the student diversity at Centennial Middle School?
Student demographics at Centennial Middle School are roughly 71% White, 16% Hispanic, 1% Black, 4% Asian, 6% Two or more.
What district is Centennial Middle School in?
Centennial Middle School is part of Snohomish School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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