On Delaware's DeSSA high-school science (Biology) test, Biology is reported on a scale from 300 to 900 (2024 to 2026), and each score falls into one of 4 performance levels. Reaching Level 3, at 600 or above, is the state's proficiency line.
| Level | Score range | What it means | Statewide 2026 |
|---|---|---|---|
| Level 1 | 300–574 | The lowest level, well below the state standard | 36% |
| Level 2 | 575–599 | Approaching the state standard | 36% |
| Level 3 | 600–636 | Meeting the state standard (the proficiency line) | 22% |
| Level 4 | 637–900 | The highest level, above the state standard | 6% |
Statewide in 2026, about 28% of the students counted for Biology reached Level 3 or Level 4. The bar above shows the share at each level (left = lowest).
These numbers are Delaware public and charter school students. SAT Reading and Writing, SAT Math and Social Studies count grade 11 students who took them in the state's spring SAT School Day and DeSSA testing. Biology counts the students in grades 9-12 who took the DeSSA high-school science test, by the school where they tested. Delaware hides groups of fewer than 15 students.
More on who is counted, and how: see how we count.
A score's meaning depends on where it lands in the ranges above, and on how it compares to other students who took the same test. Our free tool turns a Biology score into an estimated percentile versus the school, district and the whole state, so you can see where a score stands, not just its level.
Look up a Biology percentile →