The What Works Clearinghouse (WWC) has updated its 2009 intervention report for SuccessMaker®, a set of computer-based courses designed to supplement regular K-8 reading instruction. The program is designed to improve skills in areas such as concepts of print, phonological awareness, phonics, fluency, vocabulary, comprehension, grammar, and…

A vertical scale, in principle, provides a common metric across tests with differing difficulties (e.g., spanning multiple grades) so that statements of "absolute" growth can be made. This paper compares 16 states' 2007-2008 effect size growth trends on vertically scaled reading and math assessments across grades 3 to 8. Two patterns…