Purpose: This longitudinal study investigated the impact of different academic programs of primary language instruction (Spanish or English) on the dual language development of Spanish--English bilingual children. Types of academic settings offered to bilingual students as well as differing views and outcomes based on language of instruction are…

This study estimates program effects (English immersion versus primary language instruction using varying degrees of Spanish) upon English and Spanish word identification in the context of changing classrooms (cross-classification) from kindergarten through second grade. Letter-word identification is an important predictor of early reading…