This idea won't help students graduate sooner, but it does provide a small amount of income for the district as well as providing a lot of benefit for the community. In two cities we've lived in previously, the school district created a special section that offered non-credit classes that were taught by anyone who wanted to create a class. Several nights a week and all-day Saturday you would see cars as people took everything from basketweaving to house-staging classes. Off the top of my head I can recall: stargazing, theater, many crafts, meal planning, car ownership basics, girls' hairbraiding... the list goes on and on! The instructor paid a fee to use the classroom and it was income for the school district. It did require an employee to be on site to lock up at the end of the day. Our family enjoyed several classes over the years.