I work full-time at our church, but the powers-that-be allow me to do some teaching on the side at Tulsa Community College. This summer it has been a history class. It was quite stressful--it was a four-week class, four days a week, in an area (US History) that is certainly not my specialty. I would go to class at nine, then go to the office until early evening, plus pastoral calls or whatever, since for three of those four weeks the rector was out! Then it was home, eat supper, and start preparing for the next day until the wee hours of the morning.
One neat thing about the summer class that I didn't experience during the school year was students of other schools trying to earn some credits. One such student was a young man named Jonah who attends Berklee College of Music in Boston. Check out his video (he's on the piano):