The top reported proficiency rate is 53% in Science. The lowest is 34% in English language arts.
Original Research by School Decision on Primos El Sch
Primos Elementary School is a small neighborhood elementary school serving kindergarten through fifth grade in the residential Primos area of Upper Darby Township, a densely built, transit-accessible neighborhood on Philadelphia's edge. The school draws students from Primos, Secane, Clifton Heights, and Aldan, serving a student body that is majority Black, with substantial Asian, white, and multiracial enrollment. All enrolled students qualify for free or reduced-price lunch, reflecting the moderate-income character of the catchment area.
The school's recent state assessment results show uneven proficiency. In math and English language arts, measured in grades three through five, proficiency rates sit below the midpoint relative to other districts in Delaware County. Science performance, last measured a few years ago, was considerably stronger. These results suggest the school faces headwinds in literacy and numeracy instruction that warrant attention. A parent evaluating the school may want to ask whether recent instructional changes, particularly the district's adoption of enVisions Mathematics curriculum and any reading initiatives, have begun to move the needle on those lower proficiency figures.
The enrollment of roughly four hundred sixty students is stable across grade levels, with no marked growth or decline. Kindergarten through second grade each hold substantial cohorts, and third through fifth remain healthy, so the pipeline looks consistent.
Primos Elementary sits embedded in its neighborhood on Bunting Lane rather than on a separated campus, a feature that ties it closely to the surrounding community of modest older homes, small apartment buildings, and tree-lined streets. The neighborhood is walkable and anchored by a SEPTA Regional Rail station, and the school itself serves as a civic hub through its Home and School Association's family activities. The Upper Darby Township library branch nearby offers programs and resources for families. The area is built out with very low housing vacancy, meaning the residential base is stable and the school's enrollment is unlikely to shift dramatically.
At the district level, Upper Darby is navigating real infrastructure and budget pressures. A new middle school under construction in Clifton Heights will eventually ease overcrowding in the middle grades, but elementary schools, including Primos, have not seen comparable investment. The district suspended plans for a new elementary school in the 69th Street area after FEMA identified the site as a flood hazard, postponing relief from existing capacity strain. The district has signaled it will pursue a significant bond issue to address facility needs and renovations across schools. Property taxes in Upper Darby are high relative to resident income, and despite a state tax-equity supplement, the district is proposing further tax increases to close budget gaps. Families should expect upward pressure on property taxes in the coming years.
On curriculum and instruction, the district has standardized on enVisions for K-8 mathematics and National Geographic for middle school social studies, aiming for consistency across schools. This means Primos families can expect a common, aligned academic experience rather than school-by-school variation, though implementation effectiveness varies.
For a family considering Primos Elementary, the question is fit. The school serves a moderately diverse, predominantly low-income population in a stable, transit-accessible neighborhood with good walkability and civic anchors. Its proficiency results in reading and math are below peers in the county, a real constraint if strong test performance is central to your choice. The infrastructure and budget context across the district is tighter than ideal. But if you value neighborhood embeddedness, racial and economic diversity, and rail access, and are willing to supplement learning at home or seek tutoring to address academic gaps, this is a rooted school in a real community, not a high-performing outlier.
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