Middle school can be a place for learning, discovery and friendships. But for some kids, it can also be a place of cruelty, loneliness and fear. Aislyn Doeur: "You're supposed to feel comfortable. And like you're scared to walk in the hallways. ...I was scared that I wasn't going to have any friends." Jacob Kaufman: "It just got to that feeling of desperation, and pretty much hopelessness." Genesis Johnson: "I was so scared I didn't know what to do. I didn't know who to go to." Johnny Cagno: I wasn't accepted at school. I couldn't be who I am. ...I was very, very scared to go to school every day. Johnny Cagno is an eighth grader at Birchwood Middle School in North Providence, Rhode Island. The school opened its doors last winter and gave "48 Hours" unprecedented access. "48 Hours" spent six months at Johnny's school because middle school is often ground zero for bullying. Tracy Smith reports.