What are some easy free or realively low cost changes an average school can make to become a greener place?

Thre are many ways you can be greener at school. The easiest is to start collecting and recycling paper, which is the number one commodity used in a school. If you collect white copy paper separately, you should also be able to sell this and make some money. All printed matter is recycleable, and perhaps also buyable; do a little research under paper recyclers in your yellow pages. Collect and recycle cans, and plastic bottles as well. Depending on your state, some if not all of these can also be worth money to you. Start a campaign to get everyone to turn off unnecessary lights and powerstrips, especially when everyone goes home for the day. Computers should be turned off when not in use-- they use electricity and also make the rooms hotter, forcing the air conditioning systems to work harder. I don't know where your school is located, but encourage your school to go to low water-use planets and landscaping. CFLs are a good idea, but virtually every school already uses florescent lighting. Get the library to cancel subscriptions to magazines no one reads. Encourage people and your cafeteria to not use plastic ware, gles and plates. Get your friends to quit using straws-- they don't biodegrade, hurt wildlife, and are unnecessary. Use the water fountain instead of bottled water-- this is the biggest consumer scam in the history of the world!!! Good Luck with your project!