I believe that it's a good idea for you. Surface 3 is a good device, the battery won't keep you alone during classes, it's not heavy to hold it on your backpack (and you'll save space). I have one Surface RT 2 and it's perfect to travel, or presentations and events. Just keep in ming that with Surface Pro 3 you can install any kind of stuff and with Surface 3 you are limited to apps and Microsoft Office. But, as a device to school it's fine.