The Project ACCESS (Adapting Curriculum Content for Exceptional Secondary Students) resource guide is designed to help regular classroom teachers provide successful experiences to mildly handicapped mainstreamed students through the adaptation of the curriculum. The concerns-based approach, which was used successfully by Project ACCESS, focuses on individual teachers' concerns regarding mainstreamed students and incorporates a six-step process from identification of concerns to provision of feedback and evaluation. Examples of the model are given for curriculum modifications in automotive mechanics, math, science, art, driver education, social studies, English, health, and biology. A question and answer format is used to examine adoption of the concerns-based model in terms of rationale, audience, introduction into a school, implementation, requirements for success, time requirements, funding ideas, encouragement for other teachers' involvement, variations of the model, and implementation of a staff support team. A summary of other models tried but not retained by the project is also included.