1
Best kept secret on campus at Oyster River High School?
Community prompt from u/allk12. Replies below.
English Language Arts
86.0%
State avg 55.2%
District avg 75.7%
County avg 52.1%
District avg 75.7%
County avg 52.1%
Test scores
See how it ranks: all New Hampshire schools by score · Strafford County schools by score
NHSAS, SY 2024-25
All grades, all students. % Above Proficient (lvl 3+4).Mathematics
55.0%
State avg 43.0%
District avg 65.4%
County avg 38.8%
District avg 65.4%
County avg 38.8%
Science
55.0%
State avg 38.1%
District avg 60.7%
County avg 37.0%
District avg 60.7%
County avg 37.0%
What this means: On the NHSAS, New Hampshire's statewide test, about 86 of every 100 students at this school read and write at grade level, about 55 of 100 do math at grade level, and about 55 of 100 are at grade level in science. Across all New Hampshire schools, those numbers are about 55, 43, and 38.
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
65.3%
composite math + reading, all grades
Predicted
58.8%
based on NH schools with similar FRL share
Beats by
+6.5pp
above demographic expectation
What this means: About 65% of students here test proficient in math and reading, compared with the roughly 59% typical for New Hampshire 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 New Hampshire'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 11 | 86.0% | 65.8% | 178 | 55.0% | 31.7% | 178 | 55.0% | 39.0% | 163 |
| Grade ALL | 86.0% | 55.2% | 178 | 55.0% | 43.0% | 178 | 55.0% | 38.1% | 163 |
1-year history
All grades, all students. Oyster River New Hampshire avgEnglish Language Arts
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 86.0% | 75.7% | 52.1% | 55.2% |
Mathematics
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 55.0% | 65.4% | 38.8% | 43.0% |
Science
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 55.0% | 60.7% | 37.0% | 38.1% |
Recent discussions
From the Oyster River High School community.How to read these scores
What is NHSAS?
NHSAS is the statewide standardized test administered by New Hampshire public schools.
What does "% Above Proficient (lvl 3+4)" 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 86.0% mean for English Language Arts at Oyster River High School?
It means about 86.0 percent of students tested at Oyster River High School performed at grade level or above on the NHSAS English Language Arts test in 2024-25. The statewide average for New Hampshire that year was 55.2%. 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 New Hampshire, 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?
New Hampshire Department of Education, New Hampshire Statewide Assessment System (NHSAS). School-level All Students subgroup from the NH DOE public disaggregated data CSV. Headline metric is the cumulative Level 3+4 rate ("Above Proficient").
How often is it updated?
NHSAS 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.