I don't think so. I tried using a palm to take notes and I just couldn't do it. For math classes you need to draw a lot of formulas and the screen is just too small on a pda. Now if your class is history and you just write down dates and stuff then a bluetooth keyboard will make taking notes a very possible thing.

I think I will eventually get a tablet pc which is the perfect device to take notes. It just costs an arm and a leg to get one.