Quality indicators of prereferral interventions (i.e., behavioral definition, direct measure, step-by-step plan, treatment integrity, graphing of results, and direct comparison to baseline) were investigated as predictors of prereferral intervention outcomes with a sample of regular education teachers and related services personnel on the same 312 students. The majority of the prereferral interventions were deficient in these critical areas; however, the presence of quality indices was related to positive student outcomes. The results suggested that (a) prereferral interventions varied dramatically in quality, (b) the use of quality indices influenced the outcomes of prereferral interventions, and (c) improved quality of interventions led to more successful outcomes for students.