They then don't appear until Road Race 2, Academy Challenge 2, and Candice's Glam Tour. They also appear in Relay Race 1. Later, they appear in Sheriff's Chase as the speeders you're supposed to catch. Then they appear in Off Road Race 1.
Then when they go to Autovia, they go into the Motor Co. factory, and turn themselves into VINs. They then appear in Off-Road Race 2 and Academy Challenge 3. The first student appears in Street Race 1. And after that, they don't appear again.
All 4 students are playable in the game, except on PlayStation 2, where you can only play as the first one.Gallery: