"Literacy Express" is a preschool curriculum designed for three-to five-year-old children. It is structured around units on oral language, emergent literacy, basic math, science, general knowledge, and socioemotional development. It can be used in half-or full-day programs with typically developing children and children with special needs. It provides professional development opportunities for staff; teaching materials; suggested activities; and recommendations for room arrangement, daily schedules, and classroom management. The What Works Clearinghouse (WWC) reviewed four studies of "Literacy Express" for pre-school children. Three of these studies meet WWC evidence standards; the remaining study does not meet either WWC evidence standards or eligibility screens. Based on the three studies, the WWC found positive effects on oral language, print knowledge, and phonological processing and no discernible effects on cognition and math for preschool children. Appendices include: (1) Study characteristics; (2) Outcome measures; (3) Summary of study findings included in the ratings; (4) Summary of sub group findings; and (5) "Literacy Express" ratings. (Contains 9 footnotes.) [The following studies are reviewed in this intervention report: (1) Farver, J. M., Lonigan, C. J., & Eppe, S. (2009). Effective early literacy skill development for young Spanish-speaking English language learners: An experimental study of two methods. "Child Development, 80"(3), 703-719; (2) Lonigan, C. J., Farver, J. M., Clancy-Menchetti, J., & Phillips, B. M. (2005, April). "Promoting the development of preschool children's emergent literacy skills: A randomized evaluation of a literacy-focused curriculum and two professional development models." Paper presented at the biennial meeting of the Society for Research in Child Development, Atlanta, GA; (3) Preschool Curriculum Evaluation Research (PCER) Consortium. (2008). "Literacy Express and DLM Early Childhood Express" supplemented with "Open Court Reading Pre-K": Florida State University. In "Effects of preschool curriculum programs on school readiness" (pp. 117-130). Washington, DC: U.S. Department of Education, Institute of Education Sciences, National Center for Education Research; and (4) Lonigan, C. J. (2005, December). "Impact of preschool literacy curricula: Results of a randomized evaluation in a public prekindergarten program". Paper presented at the annual meeting of the National Association for the Education of Young Children, Washington, DC. This report has been updated to include a review of two studies that were released since 2007. To access the 2007 report, "Literacy Express. What Works Clearinghouse Intervention Report," see ED497625. ]