Despite policy relevance, longer-term evaluations of educational interventions are relatively rare. A common approach to this problem has been to rely on longitudinal research to determine targets for intervention by looking at the correlation between children's early skills (e.g., preschool numeracy) and medium-term outcomes (e.g., first-grade…

Two studies examined response to varying amounts of time in reading intervention for two cohorts of first-grade students demonstrating low levels of reading after previous intervention. Students were assigned to one of three groups that received (a) a single dose of intervention, (b) a double dose of intervention, or (c) no intervention.…

The purpose of this study of the Charlotte-Mecklenburg Chapter 1 Preschool Program was to document the program's effects and to make a start at determining whether the program prevents later school problems. It was hypothesized: (1) that former preschool program members would have significantly better language development than eligible students…

The program entitled Prevention of Learning Disabilities: An Interdisciplinary Model, developed and operated by the Learning Disorders Unit of New York University Medical Center, has three elements: scanning, diagnosis, and intervention. Educational intervention is done primarily by Board of Education teachers and educational assistants under the…