Buck promising Tia that he won't tell her parents about her running off to a party.
Even better: when Buck picks her up, he tells her he doesn't want to talk about it, just get her home. True to word, he doesn't bring it up until she asks him about it. He had the perfect opportunity to give her an I Warned You or an I Knew It!, but he didn't.
Tia reconciling with her mother.
Buck standing up for Maizy against her vice principal.