School-voucher and education-savings-account (ESA) programs let public education dollars follow students to private schools, including religious schools. Programs began as targeted efforts (low-income, special-needs, or failing-district students) but have expanded dramatically since 2021, with several states enacting universal or near-universal eligibility.
The Supreme Court's ruling in Carson v. Makin (2022) held that states offering tuition assistance for private schools cannot exclude religious schools, reshaping First Amendment questions about state funding of religious education.
Empirical research has produced mixed findings. Some early studies found neutral or modest gains for voucher students; some large-scale recent studies — notably in Louisiana, Indiana, and Ohio — found negative impacts on academic outcomes. Advocates argue these studies measure narrow outcomes and miss family-satisfaction and values gains.