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SCHOOL COMMUNITY·EDMONDS SCHOOL DISTRICT·NCES 530240000356

Mountlake Terrace High School

21801 44TH AVE W, MTLK TERRACE, WA 98043 · (425) 431-7776 · Snohomish County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,456 STUDENTS
C-
allk12 Grade
Scored higher than 22% of Washington public high schools
  • B-Test 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
1,456
High
DISTRICT 957 · STATE 573
Student : Teacher
23.2:1
63 FTE teachers
DISTRICT 20.7:1 · STATE 21.6:1
Free / Reduced Lunch
36%
529 students
DISTRICT 43% · 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 942129%
Grade 1035224%
Grade 1136925%
Grade 1231422%
Student demographics
68%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 71% · STATE 68% · US 70%
White
71949%
DISTRICT 44% · STATE 47% · US 43%
Hispanic
26318%
DISTRICT 24% · STATE 27% · US 30%
Black
14310%
DISTRICT 10% · STATE 5% · US 15%
Asian
22115%
DISTRICT 14% · STATE 9% · US 6%
Two+
665%
DISTRICT 6% · STATE 9% · US 5%
Native American
60%
DISTRICT 0% · STATE 1% · US 1%
Pacific Islander
181%
DISTRICT 1% · 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
79855%
Female
63844%

Discussions

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Test scores

Smarter Balanced + WCAS 2024-25 . % Met or Exceeded Standard
English Language Arts
57.6%
WA avg 58.4% . +46.7pp since 2014
Math
35.5%
WA avg 51.2% . +29.8pp since 2014

What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 58 of every 100 students at this school read and write at grade level and about 36 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 47 points since 2014, while math scores are up about 30 points.

Smarter Balanced + WCAS results by year

School yearEnglish Language ArtsMath
2024-2557.6%35.5%
2023-2446.4%26.4%
2022-2365.0%37.7%
2021-2263.2%38.1%
2018-1979.7%50.1%
2017-1877.0%47.7%
2016-1736.6%17.6%
2015-1621.5%37.5%
2014-1510.9%5.8%
% 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
41.8%
composite math + reading, all grades
Predicted
55.8%
based on WA schools with similar FRL share
Beats by
-14.1pp
below demographic expectation

What this means: About 42% of students here test proficient in math and reading, below the roughly 56% 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 Mountlake Terrace High School

Mountlake Terrace High School's state test result (41.8% proficient) is higher than 1 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Mountlake Terrace High School this school1,45636.3%41.8%
Shorewood High School
Shoreline
1,54431.4%63.5%
Edmonds Woodway High School
EDMONDS
1,60539.6%43.4%
Curtis Senior High
UNIVERSITY PLACE
1,32136.8%62.9%
Shorecrest High School
Shoreline
1,56532.1%62.4%
Stadium High School
Tacoma
1,70038.2%36.5%
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 Mountlake Terrace High School ranks

Among high schools
MeasureThis schoolIn WashingtonIn Snohomish County
State test proficiency
ranked highest first
41.8%#143 of 271#19 of 26
Math proficiency
ranked highest first
35.5%#105 of 321
▲ 62
#10 of 25
▲ 7
Reading proficiency
ranked highest first
57.6%#169 of 327
▲ 86
#18 of 26
▲ 5
3-year test score change
ranked biggest drop first
-4.1pp#76 of 259#9 of 23
Enrollment
ranked largest first
1,456#95 of 570#15 of 45
Students per teacher
ranked fewest first
23.2:1#271 of 311#15 of 23
Diversity index
ranked most diverse first
68.0%#84 of 316#11 of 25
Free and reduced lunch
ranked highest share first
36.3%#294 of 386#26 of 34
Enrollment change since 2017-18
ranked fastest growth first
+6.8%#86 of 136#9 of 12
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
1,456
+8 (+1%) vs 2020
+32% since 1990-91, when it was 1,103
Student : Teacher
23.2:1
was 23.0:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,45662.723.2:136% (529)
2023-241,38561.722.4:137% (515)
2022-231,46765.722.3:134% (506)
2020-211,4486323.0:127% (396)
2017-181,36358.523.3:129% (392)
2015-161,2955921.9:132% (412)
2010-111,3716321.8:120% (278)
2000-011,8848223.0:1N/A
1990-911,1035918.7:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Mountlake Terrace High School.

Since 2017-18: students up 7% (1,363 to 1,456); teachers up 7% (58.5 to 62.7).

About Mountlake Terrace High School

Mountlake Terrace High School is a large high school with its address in MTLK TERRACE, Washington. The school's 1,456 students are in grades 9 through 12. Enrollment is 154% higher than the average for high schools in Washington, which is about 573.

Besides Mountlake Terrace High School, Edmonds School District runs 36 other schools. The district enrolls 20,955 students.

Mountlake Terrace High School has no majority group; White students are the largest, at 49%. Smaller groups are 18% Hispanic, 15% Asian, 10% Black, and 5% multiracial. County-wide, 64% of Snohomish County residents are White. The school's diversity index is 68%, meaning two students picked at random have a 68% chance of belonging to different racial or ethnic groups.

At Mountlake Terrace High School, 62.7 full-time-equivalent teachers work with students, a ratio of about 23.2:1. That is higher than the 21.6:1 average for high schools in Washington. Roughly 36% of the student body qualifies for free or reduced-price lunch.

allk12 grades Mountlake Terrace High School a C-. The grade compares the school only with Washington public high schools, because each state gives its own test.

Test results at Mountlake Terrace High School are 14.1 points below what its student poverty level predicts. The average proficiency rate on state tests is 41.8%, compared with a predicted 55.8%, which ranks in the bottom 10% in Washington.

Census Bureau estimates for Snohomish County show that the median household income is $111,246, 38% of adults hold a bachelor's degree or higher, and about 6% of people live in poverty. Mountlake Terrace High School is one of 227 public schools in the county.

The closest public school, Cedar Way Elementary, is about 0.3 miles from Mountlake Terrace High School. There are at least 8 other public schools within five miles. On state test proficiency, Mountlake Terrace High School ranks 6th in a group of 8 nearby schools.

The National Center for Education Statistics classifies the school's location as Suburb: Large, meaning it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Enrollment in 2024-25 was 1,456, close to the 1,448 recorded in 2020-21.

Conversations here can range across enrollment questions, class placement, and PTA news. Reviews and ratings from people who know the school are welcome.

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
Mountlake Terrace High School
District
Edmonds School District
Address
21801 44TH AVE W, MTLK TERRACE, WA 98043
Phone
(425) 431-7776
County
Snohomish County
Level
High
Grade range
09–12
Total enrollment
1,456
Teachers (FTE)
63
Student–teacher ratio
23.2:1
Free and reduced lunch
529 (36%)
Locale
21-Suburb: Large
NCES ID
530240000356
Charter school
No
Virtual school
No

Related schools

Other schools in Edmonds School District
Other schools in MTLK TERRACE
Nearby schools

Frequently asked questions

About Mountlake Terrace High School
How many students attend Mountlake Terrace High School?
Mountlake Terrace High School enrolls approximately 1,456 students in grades 09-12.
What grades does Mountlake Terrace High School serve?
Mountlake Terrace High School serves grades 09-12.
What is the student-teacher ratio at Mountlake Terrace High School?
The student-to-teacher ratio at Mountlake Terrace High School is approximately 23.2:1 (63 FTE teachers).
What is the racial breakdown of students at Mountlake Terrace High School?
At Mountlake Terrace High School, the student body is approximately 49% White, 18% Hispanic, 10% Black, 15% Asian, 5% Two or more.
Who oversees Mountlake Terrace High School?
Mountlake Terrace High School is overseen by Edmonds School District in Snohomish County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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