This study investigated whether there are significant differences between reading achievements of 15-year-old students and starting age for preschool and socioeconomic factors according to the results from the PISA 2015 and 2018. The quantitative results show that there is a clear and statistically significant difference between reading test…

Young-for-grade students have been shown to receive lower grades and have a higher likelihood of retention compared to their oldest peers upon kindergarten entry. Our study of 1474 economically disadvantaged first-time kindergarteners investigates if preschool attendance may ameliorate some of the risks potentially associated with being…

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.…

Addresses issues in the organization and delivery of preprimary instruction: attendance, the basis for program entry, and the effects of alternative curricula and length of school day on student achievement. Limitations of existing studies are described, and the problem of the increasingly academic nature of preprimary curricula is discussed. (RH)