English Language Arts / Literature
33.8%
State avg 51.1%
District avg 39.5%
County avg 39.5%
-22.5pp since 2023-24
District avg 39.5%
County avg 39.5%
-22.5pp since 2023-24
Test scores
See how it ranks: all Pennsylvania schools by score · Mifflin County schools by score
PSSA + Keystone, SY 2024-25
All grades, all students. % Proficient or Advanced.Mathematics / Algebra I
50.0%
State avg 43.0%
District avg 30.3%
County avg 30.3%
+9.7pp since 2023-24
District avg 30.3%
County avg 30.3%
+9.7pp since 2023-24
Science / Biology
N/A
State avg 50.6%
District avg 49.4%
County avg 49.4%
District avg 49.4%
County avg 49.4%
What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 34 of every 100 students at this school read and write at grade level and about 50 of 100 do math at grade level. Across all Pennsylvania schools, those numbers are about 51 and 43. Reading and writing scores are down about 23 points since 2023, while math scores are up about 10 points.
By grade, SY 2024-25
School score vs state average per tested grade.| Grade | English Language Arts / Literature | Mathematics / Algebra I | Science / Biology | ||||||
|---|---|---|---|---|---|---|---|---|---|
| School | State | n tested | School | State | n tested | School | State | n tested | |
| Grade 3 | 33.8% | 49.2% | 68 | 50.0% | 54.2% | 68 | N/A | N/A | N/A |
2-year history
All grades, all students. East Derry Pennsylvania avgEnglish Language Arts / Literature
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 33.8% | 39.5% | 39.5% | 51.1% |
| SY 2023-24 | 56.3% | 49.0% | 49.0% | 55.1% |
Mathematics / Algebra I
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 50.0% | 30.3% | 30.3% | 43.0% |
| SY 2023-24 | 40.3% | 29.7% | 29.7% | 41.4% |
How to read these scores
What is PSSA + Keystone?
PSSA + Keystone is the statewide standardized test administered by Pennsylvania public schools.
What does "% Proficient or Advanced" 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 33.8% mean for English Language Arts / Literature at East Derry El Sch?
It means about 33.8 percent of students tested at East Derry El Sch performed at grade level or above on the PSSA + Keystone English Language Arts / Literature test in 2024-25. The statewide average for Pennsylvania that year was 51.1%. 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 Pennsylvania, 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?
Pennsylvania Department of Education, Pennsylvania System of School Assessment (PSSA) for grades 3-8 and Keystone Exams (Literature, Algebra I, Biology) at the high-school level. School-level All Students subgroup, "Percent Proficient and above" column from the PDE school-level data downloads. Top 2 of 4 PA performance levels (Proficient + Advanced).
How often is it updated?
PSSA + Keystone 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.