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What Works Clearinghouse, 2008
This study examined the effect of the "Language Essentials for Teachers of Reading and Spelling" ("LETRS)" professional development curriculum on the reading achievement of second graders. The authors examined data on more than 5,000 second graders from ninety elementary schools in four states during the 2005-06 school year.…
Descriptors: Educational Research, Early Reading, Elementary School Teachers, Professional Development