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Gersten, Russell; Rolfhus, Eric; Clarke, Ben; Decker, Lauren E.; Wilkins, Chuck; Dimino, Joseph – American Educational Research Journal, 2015
Replication studies are extremely rare in education. This randomized controlled trial (RCT) is a scale-up replication of Fuchs et al., which in a sample of 139 found a statistically significant positive impact for Number Rockets, a small-group intervention for at-risk first graders that focused on building understanding of number operations. The…
Descriptors: Grade 1, Elementary School Students, Experimental Groups, Control Groups
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Rolfhus, Eric; Gersten, Russell; Clarke, Ben; Decker, Lauren E.; Wilkins, Chuck; Dimino, Joseph – National Center for Education Evaluation and Regional Assistance, 2012
The 2004 reauthorization of the Individuals with Disabilities Education Act (IDEA) approved schools' use of alternative methods for determining student eligibility for special education services. IDEA encourages schools to intervene as soon as there is a valid indication that a student might experience academic difficulties, rather than after…
Descriptors: Control Groups, Intervention, Eligibility, Tutor Training