In my Fairfax County neighborhood, there are two elementary schools within half a mile of each other. The school that my children attended has an all-day kindergarten; the other one offers kindergarten half a day. The school with the half-day program, however, has other benefits, though, such as smaller class sizes in the early grade.
So, I’ve often wondered, which students were better off in the long run: the full-day program graduates or the half-day students who got more individual attention from their teachers?
Research, as it turns out, doesn’t offer much guidance on that question. Some studies show that full-day kindergarten programs, used in most school districts to give disadvantaged students a leg up on their better-off peers, do just what they’re intended to do.
Even though the poorer full-day students started out school trailing behind the more advantaged peers in half-day programs, academically speaking, they finished out the year a month ahead. Other studies, however, suggest, disappointingly, that the disadvantaged students lose their edge later on in elementary school.