"Reading Mastery," one of several curriculum components that constitute the Scientific Research Associate's Direct Instruction curriculum, is designed to provide systematic instruction in English language reading. "Reading Mastery" is a full-year curriculum and is available in two versions, "Reading Mastery Classic" levels I and II (for use in grades K-3) and "Reading Mastery Plus," an integrated reading language program for grades K-6. The program begins by teaching phonemic awareness and sound-letter correspondence and progresses to word and passage reading, vocabulary development, comprehension, and building oral reading fluency. Later lessons emphasize accurate and fluent decoding while teaching students the skills necessary to comprehend and learn from expository text. Lessons are designed to be fast-paced and interactive. Students are grouped by similar reading level, based on program placement tests. The program includes placement assessments and a continuous monitoring component. No studies of "Reading Mastery" that fell within the scope of the Beginning Reading review meet What Works Clearinghouse (WWC) evidence standards. The lack of studies meeting WWC evidence standards means that, at this time, the WWC is unable to draw any conclusions based on research about the effectiveness or ineffectiveness of "Reading Mastery." (Contains 1 footnote.)