This research abstract summarizes two reports titled: (1) "Mainstream Assistance Teams to Accommodate Difficult to Teach Students in General Education" (Douglas Fuchs and Lynn S. Fuchs) and "Prereferral Intervention through Teacher Consultation: Mainstream Assistance Teams (Douglas Fuchs and others). The project investigated a prereferral intervention approach to enhance classroom teachers' ability to manage and instruct difficult-to-teach pupils. The project, called Mainstream Assistance Teams (MATs), is based on behavioral consultation, a problem-solving approach to designing, implementing, and evaluating an intervention to change behaviors that interfere with learning. The MAT model involves problem identification, intervention planning, implementation, and evaluation. Groups of teachers implemented different versions of the MAT process. Teacher ratings suggested that versions of the MAT in which the consultant was extensively involved were more effective, but observation data showed no reliable differences among versions. When teachers and consultants selected interventions from a set designed to reduce problem behaviors, the frequency of students' problem behavior was reduced and most teachers became more positive toward these pupils. Students in the experimental groups were less likely to be referred for special education than those in control groups. Students were able to effectively monitor their own behavior. (JDD)