Researchers often presume that it is better to use administrative data from grades 4 and 5 than data from grades 6 through 8 for conducting research on teacher effectiveness that uses value-added models because (1) elementary school teachers teach all subjects to their students in self-contained classrooms and (2) classrooms are more homogenous at…

Using a causal-comparative research design, this study investigated the effectiveness of Differentiated Instruction Support Inclusion Services on fifth grade regular education and gifted students' Reading/Language Arts achievement. The study analyzed and compared the achievement of the regular education students who received no inclusion support…

One of the most difficult problems of modern school practice is how to prevent overcrowding the curriculum, breaking up the school day into small fragments of time devoted to disconnected tasks, and dissipating the energies of the children to such an extent that the process of education is hindered rather than helped by the attempts to enrich and…