Enrollment
347
Elementary
DISTRICT 215 · STATE 380
SCHOOL COMMUNITY·MOSSYROCK SCHOOL DISTRICT·NCES 530525000795
Mossyrock Elementary School
445 WILLIAMS ST, MOSSYROCK, WA 98564 · (360) 983-3184 · Lewis County
GRADES KG–06ELEMENTARY42-RURALTITLE IREGULAR SCHOOL347 STUDENTS
Student : Teacher
19.6:1
18 FTE teachers
DISTRICT 14.3:1 · STATE 17.3:1
Free / Reduced Lunch
67%
234 students
DISTRICT 72% · STATE 51%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 60 | 17% |
| Grade 1 | 50 | 14% |
| Grade 2 | 41 | 12% |
| Grade 3 | 53 | 15% |
| Grade 4 | 44 | 13% |
| Grade 5 | 54 | 16% |
| Grade 6 | 45 | 13% |
This year's kindergarten class (60) is 33% larger than its 6th grade class (45).
Student demographics
40%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 45% · STATE 68% · US 70%
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
Test scores
Smarter Balanced + WCAS 2024-25 . % Met or Exceeded StandardEnglish Language Arts
41.1%
WA avg 58.4% . +2.9pp since 2014
Math
28.2%
WA avg 51.2% . -18.8pp since 2014
What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 41 of every 100 students at this school read and write at grade level and about 28 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 down about 19 points.
Smarter Balanced + WCAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 41.1% | 28.2% |
| 2023-24 | 41.3% | 34.2% |
| 2022-23 | 35.5% | 30.2% |
| 2021-22 | 34.6% | 32.7% |
| 2018-19 | 51.8% | 54.0% |
| 2017-18 | 39.5% | 43.4% |
| 2016-17 | 40.4% | 39.5% |
| 2015-16 | 39.9% | 38.4% |
| 2014-15 | 38.2% | 47.1% |
% 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 · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
37.2%
composite math + reading, all grades
Predicted
35.0%
based on WA schools with similar FRL share
Beats by
+2.2pp
above demographic expectation
What this means: About 37% of students here test proficient in math and reading, compared with the roughly 35% typical for Washington schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Washington's top nor bottom 10%.
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 Mossyrock Elementary School
Mossyrock Elementary School's state test result (37.2% proficient) is higher than 3 of the 4 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Mossyrock Elementary School this school | 347 | 67.4% | 37.2% |
| Berney Elementary School WALLA WALLA | 324 | 66.4% | 40.0% |
| Concrete Elementary Concrete | 308 | 66.9% | 32.9% |
| Goldendale Primary School GOLDENDALE | 302 | 64.6% | 31.5% |
| Winlock Miller Elementary WINLOCK | 415 | 63.9% | 33.5% |
| Parkway Elementary Clarkston | 330 | 63.0% | N/A |
Matched among Washington elementary 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 Mossyrock Elementary School ranks
Among elementary schools| Measure | This school | In Washington | In Lewis County |
|---|---|---|---|
| State test proficiency ranked highest first | 37.2% | #678 of 936 | #9 of 14 |
| Math proficiency ranked highest first | 28.2% | #907 of 1,103 ▼ 140 | #11 of 14 ▼ 2 |
| Reading proficiency ranked highest first | 41.1% | #717 of 1,102 ▼ 26 | #7 of 14 no change |
| 3-year test score change ranked biggest gain first | +1.0pp | #499 of 928 | #7 of 14 |
| Enrollment ranked largest first | 347 | #811 of 1,268 | #9 of 17 |
| Students per teacher ranked fewest first | 19.6:1 | #1,055 of 1,085 | #14 of 14 |
| Diversity index ranked most diverse first | 39.5% | #928 of 1,088 | #10 of 14 |
| Free and reduced lunch ranked highest share first | 67.4% | #308 of 1,169 | #6 of 15 |
| Enrollment change since 2017-18 ranked fastest growth first | +17.2% | #76 of 257 | N/A |
Ranked against other public elementary 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 2024-25Enrollment
347
+55 (+19%) vs 2020
-12% since 1990-91, when it was 394
Student : Teacher
19.6:1
was 15.4:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 347 | 17.7 | 19.6:1 | 67% (234) |
| 2023-24 | 314 | 19.6 | 16.0:1 | 72% (227) |
| 2022-23 | 307 | 17.9 | 17.2:1 | 71% (218) |
| 2020-21 | 292 | 19 | 15.4:1 | 56% (164) |
| 2017-18 | 296 | 17.6 | 16.9:1 | 67% (197) |
| 2015-16 | 288 | 17 | 16.9:1 | 69% (200) |
| 2010-11 | 233 | 16 | 14.6:1 | 73% (171) |
| 2000-01 | 330 | 19 | 17.4:1 | N/A |
| 1990-91 | 394 | 13 | 30.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Mossyrock Elementary School.
Since 2017-18: students up 17% (296 to 347); teachers up 1% (17.6 to 17.7).
About Mossyrock Elementary School
This page covers Mossyrock Elementary School, a mid-sized elementary school in MOSSYROCK, Washington. The school has 347 students in 2024-25 across kindergarten through 6.
The 3 schools in Mossyrock School District enroll 644 students altogether, Mossyrock Elementary School among them.
More than half of the students at Mossyrock Elementary School are White (74%). The rest of enrollment is 23% Hispanic. The diversity index for Mossyrock Elementary School is 40%. For US public schools as a whole it is 70%.
With 17.7 full-time-equivalent teachers, the student-to-teacher ratio is about 19.6:1. The average for elementary schools in Washington is 17.3:1, so this school has more students per teacher. Student poverty is often measured by lunch eligibility; at Mossyrock Elementary School, 67% qualify for free or reduced-price lunch. Public schools in Lewis County average 57%.
Mossyrock Elementary School sits between the top and bottom 10% of Washington schools on BeatsExpectations, with an actual average proficiency rate across its state test results of 37.2% and a predicted 35.0%.
The county, Lewis County, is where the school is located. The median household earns about $74,796 a year, the share of adults with a bachelor's degree or higher is 22%, and roughly 8% of residents are in poverty. Lewis County has 45 public schools with about 12,548 students, including Mossyrock Elementary School.
Mossyrock Elementary School is less than a tenth of a mile from Mossyrock Academy, its nearest public school. Within five miles are 2 other public schools. Its average proficiency rate of 37.2% is below the 42.1% average for nearby schools.
NCES describes the area around Mossyrock Elementary School as Rural: Distant, meaning in rural territory some distance from an urban area.
Over 4 years, enrollment increased by 55 students, from 292 to 347. Federal data show the ratio rising from 15.4:1 to 19.6:1.
The allk12 page for Mossyrock Elementary School lets the school community talk about athletics, class schedules, and weather closures. You can also rate the school on this page.
Lewis County at a glance
View full county profilePopulation
85,154
Census ACS
Median income
$74,796
Household, ACS
Bachelor's+
22%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
45
12,548 students
Quick facts
Related schools
Other schools in Mossyrock School District
- Mossyrock Jr./Sr. High SchoolHigh · 281 students
- Mossyrock AcademyHigh · 16 students
Other schools in MOSSYROCK
- Mossyrock Jr./Sr. High SchoolHigh · 281 students
- Mossyrock AcademyHigh · 16 students
Nearby schools
- Mossyrock Academy0.1 mi · 16
- Mossyrock Jr./Sr. High School0.1 mi · 281
- Morton Elementary School10.0 mi · 194
- Morton Junior-Senior High10.3 mi · 205
- Onalaska Middle School11.6 mi · 195
- Onalaska High School11.6 mi · 281
Frequently asked questions
About Mossyrock Elementary SchoolHow large is Mossyrock Elementary School?
Mossyrock Elementary School enrolls approximately 347 students in grades KG-06.
What age range does Mossyrock Elementary School serve?
Mossyrock Elementary School serves students from grade KG through grade 06.
How many students per teacher at Mossyrock Elementary School?
Approximately 19.6:1 students per teacher at Mossyrock Elementary School.
What is the racial breakdown of students at Mossyrock Elementary School?
At Mossyrock Elementary School, the student body is approximately 74% White, 23% Hispanic, 1% Black, 0% Asian, 1% Two or more.
Is Mossyrock Elementary School public or private?
Mossyrock Elementary School is a public K-12 school, overseen by Mossyrock School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.