I am a little curious about something. In all the b-school classes I've sat in on, they have relied heavily on class notes. I don't think I've seen a single textbook in those classes. Do professors rely a lot less on textbooks in b-school than in other graduate programs? I guess it would make sense, because if it's mostly case studies and industry examples, then you don't really need textbooks. Is this what you all have observed, too?
Its a mix and depends largely on the class. Some classes are just cases and notes, others (e.g. corporate finance, accounting) require a book. A lot of classes have recommended (a.k.a. useless) reading as well.