Marbrook Elementary School
Score 38.2/100: better than 38% of Delaware elementary 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 23 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 3 | DeSSA Alternate Assessment | hidden (small group) | — |
| English language arts | Grade 4 | DeSSA Alternate Assessment | hidden (small group) | — |
| English language arts | Grade 5 | DeSSA Alternate Assessment | hidden (small group) | — |
| English language arts | All grades | DeSSA Alternate Assessment | hidden (small group) | — |
| English language arts | Grade 3 | Smarter Balanced Summative Assessment | 26.2 | 80 |
| English language arts | Grade 4 | Smarter Balanced Summative Assessment | 28.2 | 78 |
| English language arts | Grade 5 | Smarter Balanced Summative Assessment | 48 | 75 |
| English language arts | All grades | Smarter Balanced Summative Assessment | 33.9 | 233 |
| Math | Grade 3 | DeSSA Alternate Assessment | hidden (small group) | — |
| Math | Grade 4 | DeSSA Alternate Assessment | hidden (small group) | — |
| Math | Grade 5 | DeSSA Alternate Assessment | hidden (small group) | — |
| Math | All grades | DeSSA Alternate Assessment | hidden (small group) | — |
| Math | Grade 3 | Smarter Balanced Summative Assessment | 37.5 | 80 |
| Math | Grade 4 | Smarter Balanced Summative Assessment | 23.1 | 78 |
| Math | Grade 5 | Smarter Balanced Summative Assessment | 45.3 | 75 |
| Math | All grades | Smarter Balanced Summative Assessment | 35.2 | 233 |
| Science | Grade 5 | DeSSA Alternate Assessment | hidden (small group) | — |
| Science | All grades | DeSSA Alternate Assessment | hidden (small group) | — |
| Science | Grade 5 | Delaware System of Student Assessment (DeSSA) | 25.3 | 75 |
| Science | All grades | Delaware System of Student Assessment (DeSSA) | 25.3 | 75 |
| Social studies | Grade 4 | Delaware System of Student Assessment (DeSSA) | 29.3 | 75 |
| Social studies | Grade 5 | Delaware System of Student Assessment (DeSSA) | 63.5 | 74 |
| Social studies | All grades | Delaware System of Student Assessment (DeSSA) | 46.3 | 149 |
School profile
- Grades
- K-5
- Students
- 431
- Type
- Elementary school
- Charter school
- No
- Program
- Regular
Students
District and location
Contact
Wilmington, DE 19808
"Typical" is the middle (median) elementary 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 elementary 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.
Marbrook Elementary School at a glance
Marbrook Elementary School is a public elementary school in Wilmington, Delaware, serving grades K-5. It is part of Red Clay Consolidated School District. It has about 431 students (a typical Delaware elementary school has 450).
In 2025-26 state tests, 34% in English language arts (similar schools: 43%) and 35% in math (similar schools: 40%) reached the state standard (% proficient). On our score, which compares it only with other Delaware elementary schools, it scores 38.2 out of 100: better than 38% of them, ranking #58 of 93. Its English language arts result fell by 13 points 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.