The aim of the study was to investigate the effectiveness of the training program which was developed in order to enable students with mental disabilities to acquire self-protection skills against sexual abuse, and to maintain their safety and abilities in other environments. In this qualitative study, the participants were selected via criteria sampling method, and were composed of three girls with mental disabilities at the age range of 14-17 attending a special education and rehabilitation center in Nicosia in 2017-2018 school year. In order to evaluate the effectiveness of the program, multiple probe research design, one of the single subject research models was utilized. Both inter-observer reliability and application reliability data were collected in the study and high reliability results were obtained. The data were collected through video recorded sessions that were held on the 7th, 14th, and 21st days of the implementations in an individual training room, and were analyzed via person to person discussions by the teachers. The results revealed that after seven implementations of three main modules, including "our body and private areas" and "our body and body limits", and" good and bad secrets"; all of the participant girls achieved the expected goals of the training process.