The Career Opportunities Program (COP) is directed to the educational needs of low income families. The study of COP-trained aides describes the impact of the most effective teams of teachers and aides and social workers and aides on: the learning-teaching process; the delivery of school social work services; the pupils; communication between the school and parents; and the roles of teachers, school social workers, and principals. Opinions regarding training of COP aides and their working relationships to other school staff were also gathered. The study was confined to the elementary level and to participants who made the best use of aides (12 teachers, 4 social workers, 4 principals). The findings, based on interviews, are summarized for each of the above areas of investigation. Participants' responses are reported in 45 tables corresponding to each question asked in the interviews. Two predominant responses were observations of: (1) the positive impact of COP aides on the individualization on instruction and (2) the importance of COP aides as a resource to the professional staff. Implications related to the success of paraprofessionals, their effectiveness, and their training are discussed. A copy of the pre-interview letter and the teacher interview instrument are appended. (Author/MS)