Do you want to see our opinion about this situations?? or something else? Because I am a student in a school that still use fans and have the same problems as you said
Talk to them during lunch break that electricity is a non-renewable source of energy and saving them is the responsibility of every responsible citizen in which we students also include. You can follow this method, select students who share your ideas about saving electricity and every day choose one person from this group and its their responsibility at the end of the day to off all lights and fans. So each day one can take responsibility of switching off all electrical appliances when not needed. Guys i tell you not  only at school but also at your house save electricity. Off unwanted lights and use less electricity. We the people of Karnataka are trying to make year 2016 a power saving year. Please join your hands in this mission. Every contribution is essential for us.
Thank you