The evaluation of educational needs identifies what AIDS-related knowledge and other factors should be addressed by the program goals and objectives. These goals and objectives are used in the program planning process to develop classroom strategies. Pre-program studies, such as discussion groups and pilot studies, assess the immediate effects of the program. Their results are used to make improvements before full implementation. A process evaluation during the program implementation identifies defects by monitoring what is actually happening in the classroom and by assessing the school and community response to the program. The results are used to refine the program design and procedures. After the program is completed, the impact evaluation determines whether changes in knowledge, attitudes, and behaviors related to AIDS have occurred as a result of the program. The outcome evaluation determines whether changes in health status indicators have occurred. The results of the impact and outcome evaluations are used to make decisions about future program directions. Figure and 26 references.