Mine is a child, I have edited the settings so children in my game are children for 100days before aging up to teens.
She is now 30days into it.
However I just remembered that I did skip school alot in the first week to play with her imaginary friend and so was like a grade D?
Then though once she actually started going to school and doing homework it didn't take long to get an A than after having an A for I think 3 school days she got on the honor roll and she has kept getting an A which keeps her on the honor roll.