Charles M. Johnston, MD no longer does formal classes, but if you teach and would like to make use of him as a resource, he can make himself available. The approach that generally works best is to have students in the class prepare by reading one of his books or a set of articles. The session could start with a question and answer exchange, then proceed to a more open conversation with the larger group. This would be done virtually. If you would like to talk about options, contact him directly at dhals21218@mypacks.net