This study examined the association between preschool children's social-interpersonal skills and their transition to school in the beginning months of kindergarten. One hundred and thirty-three preschool children participated in this study. During the spring of the pre-kindergarten year, children's social-interpersonal skills were assessed as well as rated by teachers. In the follow-up year, parents/guardians and teachers reported on children's adjustment to kindergarten. The results of this study found no association between parents'/guardians' and teachers' reports of children's adjustment and readiness in kindergarten. Children's social-interpersonal skills were negatively associated with teachers' reports of children's kindergarten readiness difficulties. The findings of this study indicate that children's early social skills, developed prior to entering kindergarten, are important for children's readiness for school.