There are organizations that have successfully developed effective bystander training and Green Dot is one such organization. The foundation of their training methods are described below.
A foundational tenet of the Green Dot etc. violence prevention strategy is the belief that we cannot expect others to engage in a process we are not willing to engage in ourselves. Toward this end, training participants should expect to engage in an in-depth examination of their personal and professional connection to the issue of violence prevention, obstacles to action, ways to learn from past efforts, and capacity development. Participants strengthen competence through experiential components including journaling, giving and receiving feedback, and small group process, practice and discussion.
To learn more about Green Dot, visit the site.