When Jessie's away, the pigs will play
The school inherits $10,000, which sends the boys and girls into a war over who will get the money for their respective sports teams (despite the fact that, as far as we know, Bayside has a grand total of two sports teams). But the SBTB producers love any storyline that lets them a) dress everyone up in red and blue sweatsuits, b) set up Zack to get caught cheating and c) wrap the whole thing up with a dance.

Teen Line: Not as dirty as it sounds (Rap Room: Exactly as stupid as it sounds)
Zack continues his charitable work with the Zack Morris Foundation for Helping Pretty Girls when Tori starts a teen line and "rap room." Basically, the whole thing is just an excuse to have yet another dance (and for Zack to learn another one of those Very Important Lessons, of course).

Jessica Myrtle Spano: Gone, but somehow still annoying us
Tori waltzes into Bayside with her pushed-up motorcycle-jacket sleeves to pick up where Jessie left off, blurring the fine lines between "man" and "woman" and making fun of Zack's choice of girlfriends (namely Ginger). Whatever, Tori. Let's see you try and land a stud like Pete Sampras!