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 Do you have experience with training in my industry? How many participants are in the training? Can this course be held onsite at my offices? How do I get a certificate of completion? What is the 280 Group’s refund policy for downloadable products and the self-study online courses? Comments 0 comments Article is closed for comments.