National city placement
One campus shapes the city average
According to NCES CCD 2024-25, Plainsboro has more public-school enrollment than 45% of the 4,487 US cities in this directory. West Windsor-Plainsboro High School North enrolls 37.0% of Plainsboro's public-school students. That is enough concentration for one institution to pull the citywide enrollment, staffing, and Resource Index averages toward its own profile. The smaller campuses below should therefore be compared directly rather than inferred from the headline mean; their grade configurations and program footprints can be materially different even inside the same district.
Combined-grade campuses shape the local portfolio
2 of Plainsboro's 5 listed schools use NCES's combined or “other” grade-level classification. Citywide averages therefore blend campuses serving unusually broad or nonstandard grade spans with conventional elementary, middle, and high schools. Grade configuration is a first-order comparison here, not a minor label.
One district, but meaningful resource variation
Plainsboro's schools share one district authority while their average Resource Investment Index ranks at the 98th percentile among listed cities. Shared governance removes one source of policy variation, but it does not erase campus differences by grade span or enrollment. The 18-point gap between West Windsor-Plainsboro High School North and Town Center Elementary School at Plainsboro measures the remaining local spread. Use the district-level picture for common budget context, then compare the school components to see whether staffing, counseling, gifted-program reporting, or attendance accounts for each campus's position.