Understanding written language is crucial to academic success in all content areas. Ensuring a strong foundation in the components of written language--that is, the literacy skills of reading, writing, and oral language--is essential if students are to read with understanding and, thus, is a primary goal of early literacy instruction and of the…

This randomized controlled trial in 55 low-performing schools across Florida implemented two literacy interventions--one using a standalone intervention and one using materials embedded in the core reading program. The interventions were delivered daily for 45 minutes for 27 weeks in 2013/14 and 2014/15 in small groups of K-2 students at risk of…