Smarter Balanced + WCAS, SY 2024-25
All grades, all students. % Met or Exceeded Standard.English Language Arts
85.6%
State avg 58.4%
District avg 68.1%
County avg 60.3%
-1.3pp since 2021-22
Mathematics
87.3%
State avg 51.2%
District avg 61.1%
County avg 52.8%
-1.6pp since 2021-22
Science
85.8%
State avg 52.2%
District avg 65.1%
County avg 54.2%
-7.4pp since 2021-22
What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 86 of every 100 students at this school read and write at grade level, about 87 of 100 do math at grade level, and about 86 of 100 are at grade level in science. Across all Washington schools, those numbers are about 58, 51, and 52. Reading and writing scores are down about 1 points since 2021, while math scores are down about 2 points and science scores are down about 7 points.
Rank: Tambark Creek Elementary School places #9 of 936 Washington elementary schools, and #1 of 105 in Snohomish County for state test proficiency.
BeatsExpectations
Demographically-adjusted score · methodologyTier
OUTPERFORMING
Top 10% of WA schools after controlling for student poverty
Actual proficiency
88.2%
composite math + reading, all grades
Predicted
72.8%
based on WA schools with similar FRL share
Beats by
+15.4pp
above demographic expectation
What this means: About 88% of students here test proficient in math and reading, well above the roughly 73% typical for Washington schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 15 points, placing it in Washington's top 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual.
How this is calculated →What is Smarter Balanced + WCAS?
Washington public-school students in grades 3 through 8 plus grade 10 take the Smarter Balanced (SBAC) assessments in English Language Arts and Math each spring. The Washington Comprehensive Assessment of Science (WCAS) is given at grades 5, 8, and 11.
What does "% Met or Exceeded Standard" mean?
It is the percentage of students at the school whose scores were rated Level 3 or Level 4 on the test. Smarter Balanced reports four performance levels; Level 3 ("Met Standard") and Level 4 ("Exceeded Standard") signal the student is performing at grade level or above. A higher number is better.
What does 85.6% mean for English Language Arts at Tambark Creek Elementary School?
It means about 85.6 percent of students tested at Tambark Creek Elementary School performed at grade level or above on the Smarter Balanced + WCAS English Language Arts test in 2024-25. The statewide average for Washington that year was 58.4%. The other students fell into the lower performance levels.
How is the state average calculated?
It is a weighted average, not a simple average of each school's number. We multiply each public school's score by how many of its students tested, add those together for all schools in Washington, and divide by the total students tested that year. This way a big school with 1,500 students counts more than a small school with 50 students, which is the right way to ask "how did the typical student do this year?". District and county averages on this page use the same method, just scoped to that district or county.
Where does this data come from?
Washington Office of Superintendent of Public Instruction (OSPI), Report Card Assessment Data on data.wa.gov. Smarter Balanced (SBAC) ELA + Math (grades 3-8 + 10/11), Washington Comprehensive Assessment of Science (WCAS) at grades 5, 8, 11. Headline metric is the cumulative Level 3 + Level 4 rate (Smarter Balanced "Met or Exceeded Standard").
How often is it updated?
Smarter Balanced + WCAS is administered once a year (spring). Results are released by the state in the summer or early fall. We refresh this page after each annual release.
