“…Conversely, the literature reveals several concerns about the use of cluster grouping, and these concerns parallel those raised regarding the use ofability grouping in general. These include the effect that removing the brightest students from classrooms has on the students and teachers in these classrooms (Hoover et al 1993;Oakes, 1985;Slavin 1987a), the methods for selecting teachers for the high-achieving cluster classroom Slavin, 1987b), and whether cluster grouping provides appropriate differentiation for the high-achieving students (Delcourt & Evans 1994;McInerney, 1983;Rogers, 1991;Westberg, Archambault, Dobyns, & Salvin, 1993).…”