The top reported proficiency rate is 47% in English language arts. The lowest is 36% in Science.
Original Research by School Decision on Marbrook Elementary School
Marbrook Elementary School sits on Centerville Road in the western reaches of Wilmington, serving kindergarten through fifth grade as part of the Red Clay Consolidated School District. It is a regular public school, neither a charter nor a magnet, drawing from a part of the city where residential neighborhoods mix with the commercial and civic infrastructure of Delaware's largest urban center. Wilmington functions as the state's corporate, financial, and governmental hub, with a downtown core shaped by banking institutions and a built environment that blends historic industrial heritage with modern office towers. The city's revitalized Riverfront area, its train station on the Amtrak Northeast Corridor, and major highways give the broader area strong regional connectivity. Marbrook itself occupies a quieter corner of this landscape, away from the dense downtown grid.
The school's enrollment is moderate for an elementary building, with students spread fairly evenly across the six grade levels. The student body is predominantly Hispanic, with white students forming the next largest group and smaller populations of Black, Asian, multiracial, and American Indian or Alaska Native students. This composition reflects the western Wilmington area's demographic mix. Free and reduced-price lunch data was not reported, and figures for English learners and students with individualized education programs were also missing, so a parent looking for information on those populations would need to ask the school directly.
On state assessments, Marbrook posts proficiency rates that sit above the midpoint among the county's districts when all tested subjects and grades are averaged together. In English language arts, the most recent results show roughly half of tested students reaching proficiency, a level the school has approached or exceeded in several recent years. The multi-year record tells a story of genuine recovery after the pandemic dip, with ELA proficiency climbing back into the mid-range before settling at its current level. Math proficiency is somewhat lower, with a smaller share of students meeting the bar, though the school's math results have held in a similar band over the past several years after their own post-pandemic rebound. Science results, drawn from a smaller tested group, show a lower proficiency rate, and a parent may want to look into how science instruction is structured across the upper elementary grades. Social studies, tested in fourth grade, lands at a moderate level.
The school does not have a graduation rate, and that is expected: it serves only elementary grades, so the metric does not apply. Chronic absenteeism data was not available, and discipline, staffing, attendance, and course-access information were absent from the reported data. Title I status was not reported. These gaps mean the picture of school climate and student support is incomplete from the data alone, and a family would benefit from asking the school about how it handles attendance, behavioral support, and classroom staffing ratios.
The housing market around Marbrook is approachable relative to the broader state. Home values in the school's zip code sit near the national average and below the state benchmark, with modest year-over-year appreciation. Rents are moderate, and renting here costs meaningfully less per month than carrying a mortgage at current rates, which may matter to families weighing whether to buy or rent while their children are in the elementary years. The area's price-to-income ratio is elevated relative to national norms, reflecting the broader challenge of housing affordability in a region anchored by Wilmington's employment base.
Red Clay Consolidated School District is looking ahead to a major secondary-level change. The district is transforming Thomas McKean High School into the McKean Innovation Campus, set to launch in August 2027, with a focus on industry-recognized credentials and applied learning. That restructuring is several years away for Marbrook's current students, but it signals a district investing in rethinking its upper-grade pathways. For now, Marbrook serves as a neighborhood elementary option with a diverse student body, mid-range proficiency results that have stabilized after pandemic disruption, and a location in a part of Wilmington where housing costs are somewhat more modest than much of the surrounding county.
See more original research from School Decision →