How can I fix my memory stick?

My memorex memory stick was in my laptop while I was working and I think something hit it and bent the memory stick. When I pried the plastic cover off I noticed a small crack near the base of the USB connection (part that connects the stick to the computer) but it is on the motherboard of the stick. I am a teacher and have all of my students grades on this stick, is there any way to retrieve the info.? PLEASE HELP!!! Freaking out! The computer is not recognizing that hardware is being inserted into the laptop.