DeSSA + Smarter Balanced, SY 2024-25
All grades, all students. % Proficient.English Language Arts
86.7%
State avg 41.4%
District avg 34.0%
County avg 41.3%
+2.9pp since 2023-24
Mathematics
74.0%
State avg 34.0%
District avg 27.5%
County avg 33.9%
-1.7pp since 2023-24
Science
19.2%
State avg 24.2%
District avg 17.3%
County avg 25.4%
-7.9pp since 2023-24
Social Studies
54.5%
State avg 41.7%
District avg 32.5%
County avg 42.7%
+27.2pp since 2023-24
What this means: On the DeSSA + Smarter Balanced, Delaware's statewide test, about 87 of every 100 students at this school read and write at grade level, about 74 of 100 do math at grade level, about 19 of 100 are at grade level in science, and about 55 of 100 are at grade level in social studies. Across all Delaware schools, those numbers are about 41, 34, 24, and 42. Reading and writing scores are up about 3 points since 2023, while math scores are down about 2 points, science scores are down about 8 points, and social studies scores are up about 27 points.
What is DeSSA + Smarter Balanced?
DeSSA + Smarter Balanced is the statewide standardized test administered by Delaware 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 86.7% mean for English Language Arts at Christiana High School?
It means about 86.7 percent of students tested at Christiana High School performed at grade level or above on the DeSSA + Smarter Balanced English Language Arts test in 2024-25. The statewide average for Delaware that year was 41.4%. 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 Delaware, 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?
Delaware Department of Education, Delaware System of Student Assessment (DeSSA) for Science/Social Studies + Smarter Balanced Summative Assessment for ELA/Math. School-level All Students subgroup from the Delaware Open Data Portal (Socrata, dataset `ms6b-mt82`). Headline metric is the cumulative "% Proficient" rate (top 2 of 4 levels).
How often is it updated?
DeSSA + Smarter Balanced 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.
