How much did each school's makeup change?

Reading this. The index is directionless — it says how much a school changed between the two chosen years, not which way; the dot's color marks the group that grew most and the figures at right give every group's change. Race uses as many groups as both years tracked: when both fall in 2006-07 or later, all seven — White, Black, Hispanic, Asian, Pacific Islander, Native American, and two or more races; when the range reaches earlier, it falls back to the five groups consistent across the whole period (Asian folded together with Pacific Islander, two or more set aside) so the two years compare on the same footing. Rank is each school's position by shift within the chosen level and minimum size, computed statewide; searching or picking a county narrows what's shown without renumbering. "Elementary" means a school that enrolls kindergarten (no grade 7+) in both chosen years, so the peer set stays stable. (Delia Bolden in South Orange-Maplewood, which paused kindergarten for a year of construction, is kept in as an exception.) The index does not separate gradual change (migration, a phased plan) from a one-time event (a rezoning, closure, or reconfiguration) — a sharp enrollment change between the years is often the tell. Small schools swing more on a few students; raise the minimum to steady the comparison. Figures are whole-school and cover only schools open in both chosen years.