That's So Raven - Season 4 Episode 9 -

Raven and Chelsea get into a huge fight because Raven only thinks about herself, and never listens to others. Meanwhile, Cory starts junior high school, and becomes a business partner with a bully named "The Juicer". Then at school, Raven has a vision where Cory gets juiced. So she must tell Cory at his junior high school.