This evaluation was designed to assess the effectiveness of the PPEP in meeting its objectives, which include providing inmates with the knowledge and skills necessary to avoid HIV infection, developing effective peer educators, establishing a support infrastructure of correctional center management, and providing access to appropriate and updated information and resources. Data for the evaluation were obtained from pre- and postcourse questionnaires completed by inmates and random surveys conducted with officers and inmates, an assessment of the trainer component of the program, and a review of program materials. The evaluators found that the PPEP was an effective educational tool, it attracted a relatively large number of inmates who had not participated in any other prison education programs, it contributed to changes in inmates' attitudes toward HIV and AIDS, and it significantly increased inmates' knowledge of the transmission and prevention of HIV. Nonetheless, the program also had some shortcomings: materials had not been consistently updated, there was an inadequate review structure built into the program, and the scope of the PPEP was limited and needed to be expanded. 34 tables, 14 appendixes, and 11 references