Article continues below advertisementAl PacinoSource: MEGAAl Pacino said he was 'not very good at school.'Before he became one of the greatest actors in Hollywood, Al Pacino attended the High School of the Performing Arts as a teen. He dropped out of high school after 10th grade to work and pursue an acting career."I wasn't focused on my classes. My mother had problems, and there was no money coming in," he told The Washington Post in 2016.Article continues below advertisementAvril LavigneSource: MEGAAvril Lavigne released her debut album in 2002.