Well Belial seems to be a go-to for academic success. Most recently. there was this story of Belial basically boosting the intelligence of an entire class of kids:
Although to be fair, im not sure if it was an actual intelligence boost as much as it was just a boost in work ethic.
For future reference, I have a thread that i update every few months or so with links to success stories from various users which you may find useful on your journey