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Test scores

Radnor SHS · Radnor, PA
See how it ranks: all Pennsylvania schools by score · Delaware County schools by score

PSSA + Keystone, SY 2024-25

All grades, all students. % Proficient or Advanced.
English Language Arts / Literature
90.8%
State avg 51.1%
District avg 85.2%
County avg 52.5%
+1.5pp since 2023-24
Mathematics / Algebra I
84.6%
State avg 43.0%
District avg 81.2%
County avg 43.6%
+5.1pp since 2023-24
Science / Biology
80.9%
State avg 50.6%
District avg 80.9%
County avg 51.9%
-0.9pp since 2023-24

What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 91 of every 100 students at this school read and write at grade level, about 85 of 100 do math at grade level, and about 81 of 100 are at grade level in science. Across all Pennsylvania schools, those numbers are about 51, 43, and 51. Reading and writing scores are up about 2 points since 2023, while math scores are up about 5 points and science scores have held steady.

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
84.5%
composite math + reading, all grades
Predicted
70.8%
based on PA schools with similar FRL share
Beats by
+13.7pp
above demographic expectation

What this means: About 84% of students here test proficient in math and reading, compared with the roughly 71% typical for Pennsylvania 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 Pennsylvania'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.
GradeEnglish Language Arts / LiteratureMathematics / Algebra IScience / Biology
SchoolStaten testedSchoolStaten testedSchoolStaten tested
Grade HS90.8%63.4%26184.6%45.5%25480.9%50.6%262

2-year history

All grades, all students. Radnor   Pennsylvania avg

English Language Arts / Literature

55892023-2451912024-25
YearSchoolDistrictCountyState
SY 2024-2590.8%85.2%52.5%51.1%
SY 2023-2489.3%86.0%55.6%55.1%

Mathematics / Algebra I

41802023-2443852024-25
YearSchoolDistrictCountyState
SY 2024-2584.6%81.2%43.6%43.0%
SY 2023-2479.5%79.2%42.2%41.4%

Science / Biology

63822023-2451812024-25
YearSchoolDistrictCountyState
SY 2024-2580.9%80.9%51.9%50.6%
SY 2023-2481.8%88.1%60.9%62.7%

Recent discussions

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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 90.8% mean for English Language Arts / Literature at Radnor SHS?
It means about 90.8 percent of students tested at Radnor SHS 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.

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