English Language Arts
17.0%
State avg 36.1%
District avg 35.7%
County avg 35.7%
-3.4pp since 2023-24
District avg 35.7%
County avg 35.7%
-3.4pp since 2023-24
Test scores
See how it ranks: all Alaska schools by score · Anchorage Municipality schools by score
AK STAR + Alaska Science, SY 2024-25
All grades, all students. % Advanced + Proficient.Mathematics
15.1%
State avg 34.6%
District avg 35.0%
County avg 34.8%
+0.5pp since 2023-24
District avg 35.0%
County avg 34.8%
+0.5pp since 2023-24
Science
26.3%
State avg 43.1%
District avg 40.8%
County avg 41.2%
+8.4pp since 2023-24
District avg 40.8%
County avg 41.2%
+8.4pp since 2023-24
What this means: On the AK STAR + Alaska Science, Alaska's statewide test, about 17 of every 100 students at this school read and write at grade level, about 15 of 100 do math at grade level, and about 26 of 100 are at grade level in science. Across all Alaska schools, those numbers are about 36, 35, and 43. Reading and writing scores are down about 3 points since 2023, while math scores have held steady and science scores are up about 8 points.
Rank: Chester Valley Elementary places #122 of 134 Alaska elementary schools, and #47 of 55 in Anchorage Municipality for state test proficiency.
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
18.6%
composite math + reading, all grades
Predicted
23.1%
based on AK schools with similar FRL share
Beats by
-4.5pp
below demographic expectation
What this means: About 19% of students here test proficient in math and reading, compared with the roughly 23% typical for Alaska 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 Alaska'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 →
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 | 17.0% | 36.1% | 104 | 15.1% | 34.6% | 104 | 26.3% | 43.1% | 37 |
2-year history
All grades, all students. Chester Valley Alaska avgEnglish Language Arts
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 17.0% | 35.7% | 35.7% | 36.1% |
| SY 2023-24 | 20.4% | 36.0% | 36.0% | 35.2% |
Mathematics
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 15.1% | 35.0% | 34.8% | 34.6% |
| SY 2023-24 | 14.6% | 35.5% | 35.3% | 34.3% |
Science
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 26.3% | 40.8% | 41.2% | 43.1% |
| SY 2023-24 | 17.9% | 39.0% | 39.1% | 41.8% |
How to read these scores
What is AK STAR + Alaska Science?
AK STAR + Alaska Science is the statewide standardized test administered by Alaska public schools.
What does "% Advanced + 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 17.0% mean for English Language Arts at Chester Valley Elementary?
It means about 17.0 percent of students tested at Chester Valley Elementary performed at grade level or above on the AK STAR + Alaska Science English Language Arts test in 2024-25. The statewide average for Alaska that year was 36.1%. 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 Alaska, 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?
Alaska Department of Education and Early Development, AK STAR (ELA + Math grades 3-9) and Alaska Science (grades 5, 8, 10). School-level All Students rollup scraped from the per-school assessment-results pages on education.alaska.gov. Headline metric is the cumulative "Advanced + Proficient" rate (top 2 of 4 levels).
How often is it updated?
AK STAR + Alaska Science 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.