This digest provides general information on the characteristics of English language learners (ELLs) in U.S. preschool and primary school programs and describes learning conditions and instructional practices that are most effective for educating young ELLs. The digest suggests that as young ELLs enroll in preschool and primary school programs in record numbers, educators must continually strive to provide effective, nurturing environments and developmentally and linguistically appropriate instruction for all learners. This instruction should take into consideration the characteristics of young English language learners and their language development, the learning conditions that are most effective for these learners, and the kinds of instruction that best meet their needs. (Author/VWL)