<p>This study aimed to assess the effectiveness of an online course designed to promote sexual education among relatives of individuals with intellectual disabilities (PwID). The intervention sought to enhance communication about sexuality, improve perceived self-efficacy, and address expectations related to sexuality education. Seventeen parents of children with intellectual disabilities participated in the pilot phase of the course. Pre- and post-course evaluations measured communication frequency, self-efficacy, and participant expectations. Although only three participants completed the entire 12-week course, preliminary findings suggest improvements in key variables, particularly in communication and self-efficacy related to sexuality topics. These results should be interpreted with caution given the small sample size, high attrition, and reliance on self-report measures. Nonetheless, the findings underscore the value of technological tools in delivering sexual education in this population and highlight the potential for further development of online interventions to support relatives of PwID in addressing sensitive topics like sexuality.</p>