is there a specific angel that cares about students?

I think your mind needs to be a little more receptive to learning and education if you're going to be a good student. There are no such things as angels - belief in them went out in the middle ages.

Concentrate on your studies and leave the religious fairy stories alone.

Likely not, but there is a saint. Joseph of Cupertino may have been smart but he had a heck of a time passing exams. He got to be a priest just because the examiner was so impressed with the first few guys' answers he passed the entire class, including Joseph. Joseph was notable for another thing, but you'll have to google that.

Get real. Nobody cares about students.

Being a student sucks. But you have to do your best. Good luck with that.

There's a specific God who cares about students and I'm sure He still encamps His angels round about them.