McKean (Thomas) High School
Score 11.3/100: better than 11% of Delaware high schools on 2025-26 state tests. Schools are only compared with others of the same type in the same state. How we score schools
Performance (state tests, 2025-26)
% proficient on state tests in Delaware, all students. Colored bars are green when the school is at or above the average for similar Delaware schools.
Results over time
How this school's published results have moved year by year.
All 18 published results by grade and test
As published by Delaware Department of Education. "Hidden" means the state didn't publish the result to protect student privacy.
| Subject | Grade | Test | Result | Students tested |
|---|---|---|---|---|
| English language arts | Grade 11 | DeSSA Alternate Assessment | hidden (small group) | — |
| English language arts | All grades | DeSSA Alternate Assessment | hidden (small group) | — |
| English language arts | Grade 11 | SAT School-Day (Spring) | 22.2 | 153 |
| English language arts | All grades | SAT School-Day (Spring) | 22.2 | 153 |
| Math | Grade 11 | DeSSA Alternate Assessment | hidden (small group) | — |
| Math | All grades | DeSSA Alternate Assessment | hidden (small group) | — |
| Math | Grade 11 | SAT School-Day (Spring) | 6.5 | 153 |
| Math | All grades | SAT School-Day (Spring) | 6.5 | 153 |
| Science | Grade 10 | DeSSA Alternate Assessment | hidden (small group) | — |
| Science | All grades | DeSSA Alternate Assessment | hidden (small group) | — |
| Science | Grade 9 | Delaware System of Student Assessment (DeSSA) | 17.2 | 29 |
| Science | Grade 10 | Delaware System of Student Assessment (DeSSA) | 11.0 | 154 |
| Science | Grade 11 | Delaware System of Student Assessment (DeSSA) | hidden (small group) | — |
| Science | Grade 12 | Delaware System of Student Assessment (DeSSA) | hidden (small group) | — |
| Science | High school | Delaware System of Student Assessment (DeSSA) | 11.6 | 190 |
| Science | All grades | Delaware System of Student Assessment (DeSSA) | 11.6 | 190 |
| Social studies | Grade 11 | Delaware System of Student Assessment (DeSSA) | 11.9 | 160 |
| Social studies | All grades | Delaware System of Student Assessment (DeSSA) | 11.9 | 160 |
School profile
- Grades
- 9-12
- Students
- 870
- Type
- High school
- Charter school
- No
- Program
- Regular
Students
District and location
Contact
Wilmington, DE 19808
"Typical" is the middle (median) high school in Delaware. Higher or lower is not in itself better or worse. Address, phone and website are as the state reported them to the U.S. Department of Education for 2024-25, so check with the school before visiting. School details: U.S. Department of Education, Common Core of Data (enrollment 2023-24).
Nearby high schools
Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.
Explore schools around Wilmington
Location
Official sources
Every figure on this page comes from published government data. Check the originals here; we refresh when states release new results.
U.S. Department of Education, National Center for Education Statistics, Common Core of Data (CCD): school directory, grades served, enrollment and free/reduced-price lunch, 2023-24 and 2024-25. Spotted a mistake? Tell us.
McKean (Thomas) High School at a glance
McKean (Thomas) High School is a public high school in Wilmington, Delaware, serving grades 9-12. It is part of Red Clay Consolidated School District. It has about 870 students (a typical Delaware high school has 1,015).
In 2025-26 state tests, 22% in English language arts (similar schools: 40%) and 7% in math (similar schools: 17%) reached the state standard (% proficient). On our score, which compares it only with other Delaware high schools, it scores 11.3 out of 100: better than 11% of them, ranking #28 of 31. Its English language arts result was broadly unchanged from the year before. This overview is generated automatically from published state and federal data; figures are rounded, and you can check the originals via the official sources above.
Page updated 2026-10-12.