Cranbury School, Cranbury NJ - Test Scores & Data

Original Research by School Decision on Cranbury School

Cranbury School is the single public school in the Cranbury Township School District, serving prekindergarten through eighth grade in a building that sits within the village’s historic core. Because the district ends at eighth grade, there is no high school graduation rate to report here; students from Cranbury go on to Princeton High School through a long-standing sending-receiving relationship with Princeton Public Schools, a transition that families moving into the area will want to understand as part of their planning.

The school enrolls a student body that is broadly characteristic of the township itself. Just over half the students are white, while roughly three in ten are Asian. Smaller shares of students are Hispanic, identify as two or more races, or are Black. A very small share of students qualify for free or reduced-price lunch, which aligns with the area’s elevated housing market. Home values in Cranbury’s zip code sit well above national and state medians, a reflection of the township’s desirability as an outer-ring commuter suburb with a preserved village atmosphere. The surrounding community blends a 19th-century historic district with a significant logistics and warehouse sector that generates municipal tax revenue, and the township has seen a recent, publicly reported controversy over affordable housing mandates that involved the use of eminent domain. That tension between preservation and development pressure is a relevant context for anyone evaluating long-term stability here.

Academically, Cranbury School performs at a strong level overall. On New Jersey’s state assessments, proficiency rates across English language arts and mathematics place the school in the top quarter of districts in Middlesex County. In reading and writing, the results are consistently high from third grade through eighth grade, with seventh graders, for example, posting a proficiency rate that stands out even within an already solid pattern. Math results are also strong through seventh grade, with most grade levels showing proficiency rates well above typical county levels.

One grade-level result warrants a closer look. Eighth-grade math shows a very low proficiency rate, an outlier compared to every other grade and subject in the school. The number of tested students at that grade is small, which can amplify a single cohort’s result, but a parent or resident may want to discuss with the school how math instruction and placement work for eighth graders, and whether the curriculum at that level aligns with the state assessment. Science testing in fifth and eighth grades shows a moderate proficiency rate, with the eighth-grade science result lower than the fifth-grade one, and again worth a conversation about what the school offers in upper-grade science.

The school environment appears stable. Cranbury School is a regular public school, not a charter or magnet. The district brief turned up no publicly reported recent changes of lasting impact, so the academic program and leadership have likely remained consistent. Staffing, class sizes, and discipline data were not available in the materials we reviewed, so those specifics are gaps a prospective family would need to fill through a school visit or direct inquiry.

For families looking at Cranbury, the academic pathway is straightforward through eighth grade, then a move to Princeton High School. The peer environment is relatively homogeneous by socioeconomic status, with a very low share of students qualifying for meal assistance and a student body that is majority white with a substantial Asian presence. The housing market is expensive and the community is small, with a mix of historic character and industrial tax base. The school’s strengths in English language arts and most math grades are clear, while the eighth-grade math and upper-grade science results represent areas where additional context from the school itself would be useful.

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Academic performance

How students perform on state tests, by grade, set against the district.

Math

Grade 378%

School 78% · District 78%

▲ 28 pts above state median · ▲ 25 pts above county median

Grade 460%

School 60% · District 60%

▲ 14 pts above state median · ▲ 8 pts above county median

Grade 567%

School 67% · District 67%

▲ 24 pts above state median · ▲ 21 pts above county median

Grade 683%

School 83% · District 83%

▲ 49 pts above state median · ▲ 49 pts above county median

Grade 771%

School 71% · District 71%

▲ 36 pts above state median · ▲ 39 pts above county median

Grade 85%

School 5% · District 5%

▼ 12 pts below state median · ▼ 3 pts below county median

English language arts

Grade 381%

School 81% · District 81%

▲ 35 pts above state median · ▲ 35 pts above county median

Grade 467%

School 67% · District 67%

▲ 12 pts above state median · ▲ 11 pts above county median

Grade 580%

School 80% · District 80%

▲ 26 pts above state median · ▲ 24 pts above county median

Grade 679%

School 79% · District 79%

▲ 25 pts above state median · ▲ 29 pts above county median

Grade 791%

School 91% · District 91%

▲ 34 pts above state median · ▲ 40 pts above county median

Grade 883%

School 83% · District 83%

▲ 25 pts above state median · ▲ 29 pts above county median

Science

Grade 560%

School 60% · District 60%

▲ 33 pts above state median · ▲ 33 pts above county median

Grade 847%

School 47% · District 47%

▲ 34 pts above state median · ▲ 34 pts above county median

This schoolCranbury Township School District, same grade

Graduation rate (ACGR) reflects the federally published Adjusted Cohort Graduation Rate for the most recent year available. We refresh this data annually at the close of each academic year in June. The federal source publishes a banded rate (for example, "90-94%") instead of an exact number for cohorts small enough to risk identifying individual students. The state distribution chart, where shown, plots every school in the state with a published rate or band; schools whose rate is federally suppressed are excluded. Where the federal source publishes a band rather than an exact rate, the school is placed within its band using a stable, ID-derived offset, so its position is consistent across visits.