The multi-tasking limitations of the iPad might help you stay focused and keep your grades up.
No grade for you! But if you have an iPad with 4G data, you’ll be able to connect to the internet whenever you need to (as long as someone keeps paying your bill). If you’re in class and the wi-fi is down, too bad. The MacBook Air doesn’t have a 4G antenna built in, so you’re at the whims of your university’s infrastructure.