Two studies of
Scott Foresman–Addison Wesley Elementary Mathematics that fall within the scope of the Elementary School Math review protocol meet What Works Clearinghouse (WWC) evidence standards, and one study meets WWC evidence standards
with reservations. The studies included more than 2,800 elementary students from grades 1 through 5 in 49 schools. The schools were located in a mix of urban, suburban, and rural settings in Connecticut, Kentucky, Minnesota, Nevada, New Jersey, New York, Ohio, Virginia, Washington, and Wyoming.
Based on these three studies, the WWC considers the extent of evidence for Scott Foresman–Addison Wesley Elementary Mathematics on elementary students to be medium to large for math achievement.