the problem is the teacher confirming it without an exchange of points. in the first month, any student can learn of it from their own observations, but if they wanted it confirmed, it would require way more points that they would have/classpoints potentially. arisu being a genius and figuring it out on her own is irrelevant, her home room teacher didn't tell her.
"Hmmm, I think I can answer that. You gain the choice to freely choose your career path rather than having it determined by the school"
Anime & Comics · avbutt
dont know why, seems to just be lazy writing imo. its a way to force character growth when you dont know how to write it properly.
I Am the Mentor of Spider-Man
Anime & Comics · THE_V1S1ON