I watched a cartoon when I was young. I think it was before 2010. The show had talking mice that wore clothes. In the episode, the mice get a report card at school. There are mice who are brother and sister and the episode focuses on them. I think the sister got an A on her report card. There’s a dumb mouse who thinks she got a Z or an N on her report card. There’s also an older mouse. There’s a human girl who I think also got bad grades and is worried how her dad will react. The sister mouse tries to cheer up the girl.
Maybe” Stuart Little”