Miranda Cosgrove (on appearing in School of Rock): Being in the movie was really cool. Sometimes we had to do takes over, but Jack always kept us going. He was fun. I've been acting since I was 2, so I've been doing it for about 7 years. I did the screen test for my fourth audition and I met Jack Black, and I really wanted it, and two weeks later I got the call to pack my bags and come to New York.