English Language Arts
88.4%
State avg 43.0%
District avg 56.9%
County avg 44.2%
+6.9pp since 2023-24
District avg 56.9%
County avg 44.2%
+6.9pp since 2023-24
Test scores
See how it ranks: all Oregon schools by score · Multnomah County schools by score
OSAS, SY 2024-25
All grades, all students. % Proficient.Mathematics
86.6%
State avg 31.8%
District avg 48.4%
County avg 34.0%
+3.1pp since 2023-24
District avg 48.4%
County avg 34.0%
+3.1pp since 2023-24
Science
78.2%
State avg 30.2%
District avg 42.5%
County avg 31.2%
+10.2pp since 2023-24
District avg 42.5%
County avg 31.2%
+10.2pp since 2023-24
What this means: On the OSAS, Oregon's statewide test, about 88 of every 100 students at this school read and write at grade level, about 87 of 100 do math at grade level, and about 78 of 100 are at grade level in science. Across all Oregon schools, those numbers are about 43, 32, and 30. Reading and writing scores are up about 7 points since 2023, while math scores are up about 3 points and science scores are up about 10 points.
BeatsExpectations
Demographically-adjusted score · methodologyTier
OUTPERFORMING
Top 10% of OR schools after controlling for student poverty
Actual proficiency
81.0%
composite math + reading, all grades
Predicted
46.4%
based on OR schools with similar FRL share
Beats by
+34.6pp
above demographic expectation
What this means: About 81% of students here test proficient in math and reading, well above the roughly 46% typical for Oregon 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 35 points, placing it in Oregon'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 →
By grade, SY 2024-25
School score vs state average per tested grade.| Grade | English Language Arts | Mathematics | Science | ||||||
|---|---|---|---|---|---|---|---|---|---|
| School | State | n tested | School | State | n tested | School | State | n tested | |
| Grade ALL | 88.4% | 43.0% | 232 | 86.6% | 31.8% | 231 | 78.2% | 30.2% | 78 |
2-year history
All grades, all students. Winterhaven Oregon avgEnglish Language Arts
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 88.4% | 56.9% | 44.2% | 43.0% |
| SY 2023-24 | 81.5% | 55.2% | 43.6% | 42.4% |
Mathematics
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 86.6% | 48.4% | 34.0% | 31.8% |
| SY 2023-24 | 83.5% | 46.8% | 33.8% | 31.3% |
Science
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 78.2% | 42.5% | 31.2% | 30.2% |
| SY 2023-24 | 68.0% | 40.2% | 30.7% | 29.6% |
How to read these scores
What is OSAS?
OSAS is the statewide standardized test administered by Oregon public schools.
What does "% Proficient" mean?
It is the share of students at the school who performed at grade level or above on the test, summed across the top two of four performance levels. A higher number is better.
What does 88.4% mean for English Language Arts at Winterhaven School?
It means about 88.4 percent of students tested at Winterhaven School performed at grade level or above on the OSAS English Language Arts test in 2024-25. The statewide average for Oregon that year was 43.0%. 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 Oregon, 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?
Oregon Department of Education, Oregon Statewide Assessment System (OSAS) — Smarter Balanced for ELA + Math, OAKS Science. School-level "Total Population (All Students)" subgroup, all grades combined, from the ODE Assessment Group Reports. Headline metric is the cumulative Level 3 + Level 4 rate (SBAC "Met or Exceeded Standard").
How often is it updated?
OSAS 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.