The report presents eight studies on the effectiveness of the Parents Training Parents Project sponsored by the PACER Center, Inc. (Parent Advocacy Coalition for Educational Rights). The project is designed to provide information, training, and assistance to parents of handicapped children in regard to their rights and responsibilities under special education laws. The following studies are included: (1) a study of parents attending a PACER workshop and of control parents not attending a PACER workshop; (2) a retrospective study of parents who attended Levels II and III workshops (basic informational workshops); (3) a retrospective study of participants in Level IV (training of trainers); (4) a retrospective study of Level V (individual training assistance) participants ; (5) a survey of special education directors within Minnesota; (6) a survey of special education teachers within the state; (7) a survey of parent organizations throughout the United States that have received assistance from PACER; and (8) an examination of service-evaluation data collected in previous years. Extensive appendixes include sample forms, surveys, and participant questionnaires. (CL)