You only spilled water? Talk to a pro: I spilled orange juice and - because that wasn't bad enough - I also spilled coffee on my laptop.
Do not despair.
First, don't give up on your keyboard. A professional technician (possibly someone at school) might be able to fix it. If the keyboard is really gone, your college work is safe as long as the hard drive is still good. A technician can also open the back of your laptop, remove the hard drive, transfer it to a hard drive caddy, and copy everything from that hard drive to a different place.
Once you've got your college work back, please take this advice: Backup your work frequently, or store it in the cloud. You'll never fear losing your work again.