Lemme tell you this: Teachers are completely incompetent when it comes to using a fan the correct way. When they point the fan up and say they are just "circulating the air", that is complete BS. You're circulating hot air which does absolutely zip. Fans HAVE TO be aimed at someone to work. Trust e, I studied this. Fans are supposed to take moisture off our body, so they are supposed to hit us.
Oh, and the ones that use them for themselves, like my lard@ss math tacher I hate so much.