Thanks for the chapter!
It's really a terrible thing when teachers bully students. Having MC translate a hard paragraph was enough of a punishment for not paying attention in class, but insisting he was cheating with no evidence and trying to make him do a job so would miss lunch deliberately is too much. Investigations likely turned up that he lost weight and gained height along with his actions which probably is how she recognized him. Although why isn't mentioning how much he changed seems odd. Also, if she's such an ojousama why weren't there any escorts or bodyguards around during the incident even if they were keeping distance and avoiding her noticing them? In any case it seems the MC is going to a better school now. Should be able to catch up with the cram skill along with the 1000+ wisdom and intelligence stats. As for his siblings I agree with him in that mocking and bullying him is too engrained. Rather than reflecting on why they were admonished or taking responsibility they're riding an emotional high that lays all the blame on MC without logic or reason, just hubris. Seems odd that school is so top level if grades and academics don't matter and only good will. Although with that number of students there's probably going to be a few bullies and people looking down on the new guy even with good will. In any case, seems increasing that luck stat was a good idea, although would be nice if could find out which range of numbers equates to x amount of luck. Like is zero considered unlucky or neither lucky or unlucky? Are mid-hundreds considered being born lucky and a thousand or so having divine luck?