Overall, the evidence is limited to short studies with small sample sizes, so more research is needed. (alivebynature.com)
Each section is divided into shorter study intervals to promote learning and convenience for our students. (citationstation.com)
More recent, shorter studies of some public preschool programs, like the one in Washington State for children from struggling families, have found boosts to reading and math ability that lasted through fifth grade. (hechingerreport.org)