You could create a semester long course for 1 hour every day with 20 people and not a single one of them would leave changed.
Or you could have an hour conversation with one person and it would change their life.
So if the goal is to change people, and I think it is, then let’s start there. Before we get carried away with the class and the curriculum and all of the logistics, let’s keep one person in mind. Then, let’s think about the smallest possible thing that would change their life. Start there and make it happen.