Princeton Charter School

Princeton has one listed school, Princeton Charter School, an elementary school serving grades K–8 with 423 students. Its 2025–26 results are consistently above New Jersey’s results for the same grades: the school’s unweighted averages are 39 percentage points higher in ELA, 44 points higher in math, and 50 points higher in science. The science average covers only grades 5 and 8, while ELA covers grades 3–8 and math covers grades 3–7. The most important finding is that the school’s reported performance is substantially above state results across all three subjects.

With just one school in the list, Princeton Charter School is the only school to consider, so there is no meaningful top-to-bottom comparison among local schools. Within the school, seventh grade has the highest reported 2025–26 ELA and math results, at 96% and 95%; fifth grade has the lowest, at 84% and 78%. Even those lower scores exceed the corresponding state results by 32 points in ELA and 32 points in math. Science results were 67% in grade 5 and 79% in grade 8, both well above state figures. Eighth-grade Algebra I was 86%, compared with 75% statewide; the separate Algebra I end-of-course result was 94%, versus 40% statewide.

Results changed unevenly from 2024–25 to 2025–26: the school’s ELA average fell 5 points, from 95% to 90%, and science fell 10 points, from 83% to 73%, while math rose 2 points, from 86% to 88%. Grade-level changes also varied: seventh-grade math rose 21 points, while sixth-grade math fell 10 points; fifth-grade science fell 13 points. SchoolDigger gave the school five stars and a 99th-percentile ranking in each of the past three years; its rank was 20th in 2023–24, 8th in 2024–25, and 16th in 2025–26. In 2024–25, the student–teacher ratio was 10.5, and 8% of students were free/reduced lunch eligible; chronic absenteeism was 5%, compared with 14% statewide. These figures describe the school but do not explain its test results.