The current study examined the role of preschoolers' motivation, operationalized as persistence, in the formation of language and math skills at kindergarten. The participants were 263 children from diverse ethnic and socio-economic backgrounds. Demographic information, child persistence, and early cognitive-linguistic skills were assessed at age 3; children's academic skills were assessed at kindergarten. Results indicated that preschooler's persistence was related to their academic skills two years later over and above demographic factors and early cognitive-linguistic skills. The findings are discussed in terms of the importance of early childhood motivation for later school achievement.