I can think of a lot of reasons: Teachers are able to use tablet computers without having to be tethered to the wall, classes that permit students to bring lapt

I can think of a lot of reasons: Teachers are able to use tablet computers without having to be tethered to the wall, classes that permit students to bring laptops or similar devices are able to use the internet, "mobile labs" (carts filled with laptops that can be brought into classes) are able to use the internet, students that bring iPod touches or other handheld internet devices are able to quickly look things up during class.