Contemporary perspectives on emergent literacy in preschool emphasize the importance of providing developmentally appropriate, authentic, early writing experiences and supporting students' home language and culture. The current study analyzed kindergarten outcomes for 82 linguistically diverse, low-income children (60% Black, 40% Latino) who participated in the Early Authors Program (EAP) during preschool , and those for a demographically similar comparison group of 33 children who did not receive the intervention. The intervention emphasized family involvement and cultural sensitivity and involved children self-authoring books about themselves and their family. Children in the EAP program scored higher than comparison children on school readiness screeners a year or two later in kindergarten, and were more likely to be classified as "ready" for school. EAP children also outperformed comparison children on emergent (English) literacy skills in kindergarten as measured by the DIBELS. Boys in the EAP group received higher grades in kindergarten than boys in the comparison group. The positive effects of the Early Authors Program appear to be sustained through kindergarten.