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In this study 21 children and their parents were served by paraprofessionals and 16 children were served by professionals in the Portage Project - a home approach to the early education of handicapped children in a rural area. The Portage Project, using a precision teaching model, offered an opportunity to compare gains made by children when they were served by a paraprofessional or a professional. The results indicate that in this project, paraprofessionals were as effective in teaching specific behaviors as professionals.
Schortinghuis et al. (Mon,) studied this question.