As a former or "recovering" Catholic, I actually know a site where you can look stuff like this up (: Off the tuktok of my head I was going to say Saint Catherine, but I checked this website to be sure and found two others. Thomas and Ambrose.
Each saint has a back story which the site tells you some of, whenever I was looking for a saint I liked to be sure I know some about him or her and could connect in someway with the Saint I was going to be asking for help.
I'll post the iugnay to these three's profiles here for you to check out (:
St. Thomas(Patron saint of Catholic schools, Colleges, Schools, and Students):
link St. Catherine (Patron saint of Philosophers and Students):
link St. Ambrose (Patron saint of Bee Keepers(though that parts unimportant lol) and Learning.):
link While praying can be a huge comfort and definitely boost your confidence, be careful not to rely completely on prayer, especially when it comes to academics. Make sure you get the tutoring and studying help you need as well (: