Ongoing longitudinal study followed 110 students in western Canada from kindergarten through grade 7. In grades K-2, oral language skills were related to gender and problem behavior but not to age or school attendance. Seventh-grade achievement was related to early oral language skills and early problem behavior but not to age at school entry.…

This longitudinal study examined the effects on children of three kindergarten schedules: half day, alternate day, and full day. A secondary purpose was to examine the relationship between preschool attendance and subsequent school performance. Two additional variables thought to be related to school success were also explored: children's gender,…