<Shrug.>.. I still don't agree with it.
But from Apple's website : [link|http://www.apple.com/education/products/ipod/|Audiobooks. Download audiobooks on a multitude of subjects from authors including Elie Wiesel, William Shakespeare, and Mark Twain.]
From [link|http://www.gurteen.com/gurteen/gurteen.nsf/id/ipod-learning| another site], the author talks about giving, watching and storing lectures on his Ipod. The advantage there is that the author can watch and re-watch the lecture when they want to. (Possibly far more advantagous to college students than high school students)
Blech. The disadvantages that I see are they there's no way to change the battery in the ipod (limited operational life), a high potential for abuse and students will want to keep their ipods after graduation (and would you want a hand-me-down ipod?)