Slavin, R.E., Lake, C., Davis, S., & Madden, N. (2010) Educator's Guide: Identifying What Works for Struggling Readers. Baltimore, MD: Johns Hopkins University, Center for Data-Driven Reform in Education.
This report published on the Best Evidence Encyclopedia (BEE) website provides an extensive review of the research on the outcomes of 27 early childhood programs. Six of the programs produced strong evidence of effectiveness in language, literacy, and/or phonological awareness. All of the effective programs had explicit academic content, a balance of teacher-led and child-initiated activity, and significant training and follow-up support.