My kids planing on going into the music career are signing up at the theatre for music class. Because they don't have homework (because they haven't been to school yet), their grades drop like a rock on the first day, they they get bawled out for bad grades. I've found a work-around. On their first day, they choose the option 'Work Hard' instead of the usual at the regular school where they 'Meet New Friends'. This time I forgot and noticed their bad grades just before letting out. I know, one-hundred percent (via Murphy's Law), that the scolding is going to screw up the trip some of my Sims are going to take after school/work lets out. I used a cheat (Master Controller > Intermediate > Career > School Performance) to moderate their grade to avoid the scolding. It was at -34.????????. I just removed the "3" leaving it just below zero.