Reported in summary form is an accountability model developed in Duval County, Florida (funded through Title VI) for planning, developing, and operating an educational program for trainable mentally handicapped children. Background information consists in such aspects of accountability as systematic planning, assessing, and refining educational programs based on goals for the students; and a description of the project. The model is described as having two program phases: planning and development involves establishment of program goals, with participation of the lay community and professional educators; and specification of behavioral objectives includes three competency areas (social, academic, and occupational). One aspect of program operation is described as preliminary assessment of students' behavior in competency areas, which are subdivided into components (such as math), clusters (such as money concepts) and modules (with prescribed requirements for each cluster). The other aspect of program operation is described as formal assessment of students' behavior which is based on prior assessment and interim performance, and requires teacher selection of instructional approaches, implementation of strategies, and strategy evaluation. Presented are implementation strategies for planning, developing, and operating a program using the model; and operational suggestions (such as soliciting parental and community concerns, and the need for inservice teacher training). Provided in appendixes are behavioral objectives and their subsets, and assessment forms. (MC)