Noting the lack of research on how early childhood education (ECE) programmes within family literacy programmes influence Latino children's early language and literacy development, this study examined key features of ECE programmes, specifically teacher-child interactions and child engagement in language and literacy activities and how these features relate to Latino children's early language and literacy development. Participants were 181 Latino children (3-5 years old) from low-income families enrolled in 22 ECE programmes within family literacy programmes. Teacher-child interactions were of medium quality on socioemotional support and low quality on instructional quality. Latino children spent about 20% of their day engaged in language and literacy activities. Multilevel regression analysis results showed that the length of Latino children's engagement in language and literacy activities in ECE programmes was more strongly related to their English oral language skills and alphabet knowledge than the quality of teacher-child interactions. (author abstract)