The National Education Association prepared this booklet on school entrance age because the association feels that the issue of a national cutoff date for entrance to kindergarten is perhaps the least controversial, most popular, and easiest educational reform issue to promote. The first part of the booklet: (1) provides information that supports a national September 1 cutoff date; (2) presents arguments that NEA state affiliates can use to frame the issues; (3) cites related NEA policies; (4) lists key people and organizations that affiliates might call on for support and supplementary information; and (5) provides nine references. Remaining materials include: (1) a discussion of pupil age at school entrance; (2) a consideration of the question of whether preschool is too much too soon; and (3) a table on kindergarten staff characteristics prepared by the Education Commission of the States. Also included is a table listing school entrance age dates for each of the United States and the District of Columbia. (SKC)