Individuals with intellectual and developmental disabilities have historically not had access to sexual education curriculums. Furthermore, while parents are often hesitant to provide instruction themselves, all stakeholders acknowledge that this population is at a high risk for sexual abuse. This population does have sexual feelings and the desire to have relationships with others. Therefore a need for accurate information on this topic to stay safe and healthy is imperative. This study focused on evaluating a curriculum over 3 years, with a total of 53 participants with a mean age of 20.68 years old. The curriculum included topics on relationships and boundaries, anatomy, sexual intercourse, sexual transmitted infections, and abuse red flags. The results include statistically significance for pre and posttest for the intervention groups, with no significance for the control group. Interviews with participants reveal socially validity of the topics. The discussion section highlights the importance of this subject for the participants and underscores the demand for additional replication. Future research should consider assessments and maintenance of skills learned.