If you attended Sandra Day O'Connor High School in Phoenix, sometime between 2005-06, it's likely you passed by singer-actress Jordin Sparks in the hallway.
While some high school alumni turn into notable Hollywood celebs, it's not common. And it's less common for two or more celebs to attend the same high school.
Elle magazine recently put together a list of stars who went to the same school at the same time.
Bet you didn't know Cameron Diaz and Snoop Dogg both attended Long Beach Polytechnic High School.
Though, while Snoop was rapping in the lunch room Cameron was perfecting her drama monologue.