Copyright and Fair Use SR

7) I can't really comprehend how it is okay to post work that uses copyrighted material without permission, even if it is on a secure, password protected site. Work that breaks copyrights should not be published anywhere in my mind. If a student used the work without permission, they should be talked to, taught how to do it right, and asked to re-do the assignment properly in order to get credit. And their original permission-less work should not be posted anywhere. Doesn't make sense to me how this is okay!
10)I know that teachers can use these "legitimately acquired" materials in the classroom. But I didn't know they couldn't share it with other teachers. If they are putting it out there for other teachers to find and use in their classes, I feel that that is good networking and sharing. If it is okay for a teacher to use it, why isn't okay for them to say "this worked great, you should use this in your classroom too" and share?
12) It seemed strange to me that a teacher can tape something off TV or burn a DVD to obtain a clip to use in class or for student use. We can post copyrighted material on supposedly secure sites, and we can hand over burned copies of movies to students for their use in a project, but we can't share materials to use in class with other teachers? Some how most aspects of DVD burning seem illegal and the line looks really fuzzy to me.
15) Why is it a teacher can hand out burned clips to students, but they can't pile a bunch of clips together to show to a class? If it's okay to do with individual clips, it seems like it would be fine to compile those clips into a montage, especially if it's being used as a lesson starter.
16) Teachers can use now illegal-to-make machines to override copyrighted DVDs!? The law giving teachers the right to use technologically blocked material seems fair and good. What I don't understand is how we are allowed to do so through the use of a machine that is now illegal to produce.