Three studies of
SuccessMaker® meet What Works Clearinghouse
(WWC) evidence standards with reservations. The three
studies included 450 students, ranging in age from nine to
16 years, who attended elementary, middle, and middle-high
schools in Alabama, Illinois, and Virginia.
Based on these three studies, the WWC considers the extent of
evidence for SuccessMaker® to be small for alphabetics, reading
fluency, and general literacy achievement, and medium to large
for comprehension.