The headline number
While the US public school system as a whole has been shrinking, 1,577 schools grew enrollment by more than 50% between 2017-18 and 2024-25, and 438 more than doubled in size. Another 4,401 schools grew by at least 25%.
These growing schools fall into three categories: schools in the fast-growing Sun Belt suburbs (DFW, Phoenix, Tampa, Charlotte, Nashville), high-performing magnet and charter schools that families actively choose, and virtual schools that expanded sharply during and after COVID.
Where the growth is
Texas, Florida, Arizona, and the Carolinas account for the majority of the geographic growth. The pattern follows interstate migration. Families leaving high-cost-of-living states cluster in specific metropolitan suburbs, and the local schools absorb the influx within two to three years.
In Florida, the growth is amplified by school-choice policy. The state's expanding voucher and scholarship programs let families select schools beyond their attendance zone, which concentrates enrollment in the schools that win parent reputation rankings.
The virtual asterisk
A meaningful share of the largest growth comes from virtual public schools and online charter networks. Pennsylvania Cyber, Commonwealth Charter Academy, Ohio Virtual Academy, and Texas Virtual Academy each grew by thousands of students. Read these separately from brick-and-mortar growth. Virtual schools serve a different population, often homeschooling-adjacent families, and their growth is a categorical shift rather than a neighborhood-school boom.
What it costs to grow fast
Fast-growing schools have their own problems. Class sizes balloon, teachers are stretched, portable classrooms appear in parking lots. The schools showing the strongest growth are also the ones most likely to need capital expansion bonds within the following five years.
Methodology
Source: NCES Common Core of Data, 2017-18 and 2024-25 universe files. Sample restricted to schools open in both years with at least 200 students in 2017-18, so that percentage changes are meaningful. Virtual schools (those NCES classifies as fully or primarily online) are included but flagged separately in our state-level rollups.