The manual discusses a school-based internship model for the preparation of teachers of handicapped adolescents. The first section of the organizational manual describes the need for and attributes of the school based model (the Mark Twain Teacher Internship Program). The basic missions of the program are described as preparing additional personnel and providing a public school-based model for graduate teacher training in supplementary education for students with learning and emotional difficulties. Section two offers information to demonstrate one program's implementation of the model, and is divided into the following parts: goals and foundations, organization and management, curriculum, instruction (inservice courses), instruction (practicum), instruction (elective projects), instruction (orientation to community resources), recruitment and selection, program evaluation, and program funding. The third section contains the proceedings, results, and conclusions of a regional conference to consider application of the model to other settings. It is explained that conference participants perceived the public school-based model generally applicable to rural, suburban, and urban settings. (Author/PHR)