A growing number of early childhood interventions are intended to be used by classroom teachers to support children's emergent literacy development, yet we know little about for whom such interventions might be effective. In this study, we examined whether children's initial emergent literacy skills (alphabet knowledge, phonological awareness,…

For preschool-aged children at-risk for literacy difficulties, we examined whether classroom and home environments were jointly associated with literacy skill gains and whether environments moderated response to intervention (n = 281). We first used a person-centered approach to characterize children's classroom and home environments, identifying…