How many participants are in the training? Nadia Grutas June 08, 2021 17:12 Updated We prefer small class sizes to maximize interaction and learning. Typical class sizes are from 8 to 20 participants. Related articles Can this course be customized? Can this course be held onsite at my offices? How many participants are in the training? Are there any essay questions on the exams? Comments 0 comments Article is closed for comments.