Apparently, when you get old enough, many universities will let you audit courses for free. In the name of diversification, I'm told. I don't live near any college that isn't strapped for money, however, so if I take a class I get charged full price. I took an online course from San Juan College in Farmington, NM (no yoga pants) and really enjoyed it, but the school is in trouble because the oil and gas people are pulling up stakes and moving back to Oklahoma and Texas.