Copyright in an Electronic Environment

1. Can students upload their multimedia project to YouTube?
2. Are there limitations to the amount of pictures or length of music or video that can be used in a multimedia project?
3. Do you need to request permission from the original creator in order to use copyrighted material in multimedia project for school related assignment?

In my reading of Copyright in an Electronic Environment, I learned students are allowed to upload their own works on You Tube as long as they use the proper citations.  There are limitations on the amount of pictures and length of music that can be sampled and the magic number seems to be 10%.  That also goes with any type of multimedia.  As long as the student is using the samples for educational purposes, there is no need to get written permission from the creator.  The moment the samples are used for anything other than educational purposes, all bets are off and they need to get written permission from the creator.  Teachers and educators are so afraid of getting in trouble they don't give students the freedom to go out and make their own multimedia projects.