“…Indeed, the results of several data-based studies with severely handicapped students (Lombardino & Mangan, 1983;Macy, Solomon, Schoen, & Galey, 1983;Sandler, Coren, ~ Thurman, 1983) and mildly handicapped children (Bittle, 1975;Chapman & Heward, 1982;lmber, lmber, & Rothstein, 1979) support this premise. Furthermore, this assumption is the basis for the proviso in PL 94-142 mandating parental involvement in their child's educational process (Turnbull, Turnbull, & Wheat, 1982).…”