You may see a few people using iPads in your classes during your first semester. You won't see them in your second semester (unless you fail the class too).
Who of you have actually been to college, seriously? Do you have visions of being on campus 12 hours per day? Do you think you are going to be carrying every text book around campus all day so you can do your math in the student union, U.S. History in the library, and Philosophy on the quad? Do you think you will be laboring over 4 classic books and an English textbook while you write your 10 page term paper at the library until midnight?
Wake up. You actually have a home. You will probably have a car. You don't need to set up camp at the library to write a paper. Believe it or not, professors tend not to have you follow along the textbook as they read it aloud to you. You don't need the book in class (if you do, register for a different section - you won't regret it). For the most part, you don't spend a large part of the day on campus without being in class. You have an hour or two between classes that is great for preparing for class but not very productive for actual studying.
You don't need to carry all your books on you. You will rarely need to carry any of them, and when you do, it will usually just be one in particular. Professors do not tell you to open to page 18 and follow along. They summarize and explain the material. You read the book later, which reinforces the lecture and provides more in-depth information.
What is all this nonsense about a netbook? You have a backpack for crying out loud! If you want to take your notes on a computer, buy a 13"-15" laptop that weighs 5 pounds. It's less massive than all those books you don't need to be carrying around. Your backpack will spend 80% of the time on the floor anyways. You can load up all those ePub textbooks that other people think make their iPads so fancy. You'll even be able to switch from textbook, to textbook, to internet, to whatever with a click of the mouse.
If you don't use a laptop for note taking (my recommendation), you will rarely even need to bring it with you. There are computer labs on campus. Save your files on a flash drive and you will have a place to work on them if you need to. You may even need a particular lab anyways for specific software you don't have. You will able to easily swap files with classmates too (except your iPad toting friends). For the occasions you want to bring it with you? Good news, you still have that backpack!
If you think you won't need anything but your iPad in class, you are in for a rude awakening, my friend.
Have fun hovering your hands over your iPad for
50 minutes while you hunt-and-peck the virtual keyboard that is laying flat on your desk. I hope you are comfortable leaning over your desk and staring directly down at the screen too.
You want to keep your notes in
Pages?! You will spend more time correcting typing errors, formatting notes into something with any bit of organization, and shifting your attention between your desk and the board than you will spend time paying attention to the lecture! Heaven forbid you ever have to switch apps to your textbook, copy of the lecture slides, a different pages of notes, or a graphing calculator!
Suppose you are keeping notes and you need to reference material from a previous chapter (formula, concept, whatever). You can't flip between the two documents with a single mouse click (tap). You can't even open the two documents at once! You can't view them both on the screen at once. You can keep all your notes for a class in one, long document and scroll back and forth, I suppose. Good thing you have a scrollba... oh, wait
What if you want to copy/paste from a source into your notes? With a laptop, you switch programs with a mouse click, select with a single drag of the mouse, and copy and paste with two keystrokes. On the iPad? Close the first app, navigate to and launch the second app, possibly navigate to the source, double tap and hold to bring up the selection quotes, drag one handle to the end, drag the other handle to the beginning (hoping the "smart" selection actually grabs only what you are intending), wait for the balloon pop-up, tap copy, close the app, navigate to and re-launch your original app, tap the text field to bring up the keyboard, drag the cursor to the location you need it, tap the cursor for the balloon pop-up, and tap paste.
I almost regret having just graduated because now I won't be able to see how many weeks into the semester it takes before anyone with an iPad stops pulling it out of their bag.