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Demographer: Glen Ridge enrollment down over decade, modest shifts projected over next five years
Summary
A consultant presented a five-year demographic study showing a decade-long enrollment decline of about 152 students and projected uneven grade-level changes that could leave Central School facing a seating shortfall within five years.
Dr. Richard Gripp, demographer for Statistical Forecasting, told the Glen Ridge Public School District board that ‘‘so the purpose of the study is to project enrollments’’ and that the district has seen a net decline of roughly 152 students over the last decade.
Gripp described the firm’s methods: 10 years of historical enrollments, cohort-survival ratios applied to the most recent counts and block-level birth data from the New Jersey Department of Health. He said the analysis focuses five years ahead because longer forecasts are unreliable for a small community and noted data gaps in 2022–23 block-level births that limited some zone-level estimates.
The study showed consistent declines at the elementary level across the last seven years but projected a short-term increase in younger elementary cohorts driven by ‘‘inward migration’’—parents moving into the district to enroll children—while middle and high school grades are expected to decline as smaller cohorts progress through the system. ‘‘Enrollments are projected to be lower in the next 5 years,’’ Gripp summarized, ‘‘but the decline is not projected to be uniform across the 3 grade configurations.’’
On building capacity, Gripp said current overall seating is mostly surplus but highlighted that Ridgewood Avenue already feels tight and that Central School is projected to face a shortage of seats in five years under the district’s long-range facility plan assumptions.
Board members asked whether enrollment declines reflect the town’s overall population trends. Gripp said district enrollment ‘‘mirrors what’s happening at the community’’ but emphasized migration patterns and housing availability as major drivers, and he flagged recent census data disruptions that limit mid-decade precision.
The presentation underscored two operational takeaways: monitor kindergarten cohorts and birth-to-kindergarten ratios as early indicators, and track town planning approvals because only approved developments were modeled and those could change projections if new housing is authorized.
The district said it will circulate the full report and return with updated enrollment inputs after the October 15 enrollment census date and as more reliable birth and housing data become available.
