Schools in Zip Code 08557

ZIP code 08557 has one school, Delaware Township School, serving prekindergarten through grade 8, with 403 students. In 2025–26, its proficiency rates were above New Jersey’s in all six tested ELA grades, five of six mathematics grades, both reported science grades, and grade 8 Algebra I. The clearest overall finding is that results are generally stronger than the state’s, but vary substantially by grade—especially in mathematics.

Within the school, grade 6 stands out in ELA and math, while grade 8 math is the lowest result: ELA ranged from 58% in grade 4 to 71% in grade 6, and math ranged from 62% in grade 6 to 29% in grade 8. That 33-point math spread is much wider than ELA’s 13-point spread; even so, grade 8 math was 6 points above the state. Algebra I was a strength, with 94% proficient in grade 8, 19 points above the state. Since this is the only school listed, there are no other local schools to rank against it.

Results changed differently by subject: the average across grades 3–8 rose 7 points in ELA, from 57% in 2024–25 to 64% in 2025–26, while math rose just 1 point, from 51% to 52%. ELA gains were especially large in grades 3 and 6, while grade 8 math improved 11 points but remained the school’s lowest current math result. Science also diverged by grade: grade 5 fell 17 points to 43%, while grade 8 rose 6 points to 24%. SchoolDigger rates the school at 3 stars and ranks it 401 of 1,331 schools, at the 70th percentile, in 2025–26. For context, its 2024–25 student–teacher ratio was 8.8, and 5% of students were free/reduced lunch eligible that year; chronic absenteeism was 6%, the same as the district rate and 9 points below the state’s.