Why can't they do a wireless sync at school with a time limit on the content?
Not that hard, people. Just get near the school so the device can pick up the WiFi signal and have it update itself with the new information.
If you're scared if the content might leak out to the Internet, utilize the TPM chip inside some computers to secure the information to that particular system.
..and if it's a digital textbook and you are attending school, it should update itself without issues. I know most tablets and e-readers have digital serial numbers built into the hardware and/or software. Just have the encryption certificates expire every Monday (or whenever) and renew.
People are making this more complicated than it has to be.
Good thing Hollywood doesn't own the massive backbones the world has. If it did, the Internet that we now know it would cease to exist due to "the possibility of inducing copyright infringement".
Ugh.. I'm soo damn sick of this "inducing" crap that I could puke. Just like the following:
Buying a car can induce global warming
Eating can induce me having to use the toilet
Exercise can induce sweating and exhaustion
The MPAA/RIAA is inducing me to kill several people due to the movie/music telling me to.