Children's school readiness has received much attention from professionals in the field of education. Nevertheless, scholars in Middle East countries have not investigated this topic in a major way. The purpose of the present study was to determine (i) the most common parent-child activities for first-grade pupils in Tehran primary schools as rated by parents; (ii) the skills and abilities of the children as rated by first-grade teachers; and (iii) the relationship between parents and teachers' ratings of children's readiness for school. Multi-stage cluster sampling was used to select samples, and the research instruments (questionnaires) were distributed among 36 teachers and 756 parents. The study found that the most common weekly activities with children among Tehran's families were reading to the child, watching television, helping the child do chores, and playing sports. Teachers' rating of children's skills and abilities indicated that the majority of children had previous experiences with other children. In contrast, teachers report that pupils lack abilities such as following directions and instructions, positive prior reading experiences, and listening and paying attention in the classroom. In addition, there was a significant relationship between parents' ratings of children's activities and teachers' reports of children's different skills and abilities.