Considering the premise 9f the Manga this is one of the few I've seen achieve a pretty normal school life. Normally, I'd have expected the MC take over the student body or have teachers bow to him at this point. He got enrolled in the common course he wanted, he actually can't use the usual d-rank spells they're practicing (so it's not a complete waste of time for him), he just went out picking up girls with a friend, and got reprimanded for it. Hopefully he doesn't stick out too much after whatever's going to happen with the noble (though you'd think someone that could have easily killed you would be someone you'd stay away from; not actively seek for revenge).
The only thing I don't like about this so far is the teachers should really stop the behavior of openly aggressive and prejudiced students in the hero course (like that noble). Don't tell your class to practice and then not do anything when another student obstructs that practice (especially when the guy in question obviously needed it).