Argues that "redshirting" in kindergarten (or maintaining children in grade) can be a positive intervention if (1) the concept is used to enhance ability rather than underline failure and (2) the time periods children spend in the primary grades are made more flexible (to accommodate children's different rates of mastering skills). (KS)

Reviews research on the academic performance of early entrants, noting that damaging consequences for children who are not developmentally mature may continue throughout their school careers. Suggests possible ways to reduce the magnitude of the "unready" child's problem. (KS)