How many participants are in the training? Nadia Grutas November 13, 2020 20:57 We prefer small class sizes to maximize interaction and learning. Typical class sizes are from 6 to 20 participants. Related articles Do you have experience with training in my industry? How do I get a certificate of completion? If I return an item, how do refunds work? How long are the live online courses? Comments 0 comments Article is closed for comments.