The current study explored the literacy practices used by primary caregivers and Head Start teachers of low-income Latino children, examined the extent to which these practices are continuous, and investigated the role of continuity in home-school literacy practices on Latino preschoolers' emergent literacy development. Results showed that continuity in home-school global literacy practices, as well as in the use of high-challenging talk during book sharing interactions, was predictive of children's emergent literacy skills at the end of the Head Start year. By contrast, discontinuity in home-school book sharing styles led to higher emergent literacy outcomes. Results are discussed in relation to the importance of the home and preschool environments in supporting low-income Latino children's early literacy development. (author abstract)