I know fair use is a tricky topic.... Anyway, imagine that a class is doing a school project about prevention (for example..umm..against drugs). The students are doing a video and uses some copyrighted material. If Im correct fair use allows to use this video at school, for example during the prevention event. But what about uploading it ito the net. Now I get confused. Is it allowed to publish this "teaching" material? Oh, and one more thing. Is there any place on the net where the fair use is explaind well?