In this paper, we examine the effectiveness of the content and delivery of online training for mentors, some of whom had visual impairments, of middle and high school students with visual impairments in a STEM-oriented program. Data from online surveys, an online mentor training knowledge quiz, and phone interviews were analyzed to assess the mentor training. Twenty-one of the university mentors and industry mentors (N = 26), who had visual impairments, participated in the study. Findings suggest the mentoring training content was useful, valued, and retained. Use of podcasts to deliver the content was effective.