Developed by the staff of the Albuquerque Integration Model (Project AIM Outreach), the guidelines present a framework for organizing and conducting an integrated classroom for handicapped and nonhandicapped preschoolers. AIM is reviewed in terms of its conception of placement along a continuum of less restrictive environments. Guidelines center on four program aspects: (1) preparation (staffing, curriculum choice); (2) placement (placement of handicapped children and selection of nonhandicapped children); (3) planning and implementation strategies (educational assessment, individualized education plans, classroom rules, the environment, classroom planning, schedules, play, classroom strategies); and (4) parent/professional partnerships. Appended material includes an overview of selected criterion-referenced tests and criteria for integrating mainstreaming handicapped children in the form of a checklist. (CL)