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What Works Clearinghouse


A central and trusted source of scientific evidence for what works in education.

New Quick Reviews Released  (Dec 18) 
The WWC has released two new quick reviews: one looks at a study of the effects of a program that provides coaches to middle school reading teachers; the other rates a study of the effects of the Language Essentials of Teachers of Reading and Spelling (LETRS) professional development curriculum on the reading achievement of second graders. 
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Houghton Mifflin: Invitations to Literacy Intervention Report Released  (Dec 16) 
This new Beginning Reading report from the WWC looks at "Houghton Mifflin: Invitations to Literacy", an integrated K–8 reading and language arts program that is structured around themes and aims to stimulate, teach, and extend communication and thinking skills. 
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New Lindamood Phonemic Sequencing (LiPS) Report Released  (Dec 16) 
The WWC's report on "Lindamood Phonemic Sequencing (LiPS)", formerly called the "Auditory Discrimination in Depth [ADD]" program, has been updated to include reviews of 12 studies that have been released since 2005. 
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Two New Quick Reviews Released  (Dec 4) 
The WWC has released two new quick reviews: one looks at a study of the use of everyday language to teach scientific concepts to fifth graders; the other rates a study of "Children's Defense Fund Freedom Schools", a summer program that aims to improve the reading skills of disadvantaged elementary and middle school students. 
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Updated Reading Recovery Report Released  (Dec 2) 
The WWC's Reading Recovery® report has been updated to include reviews of 28 studies that have been released since 2005. 
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