A risky move
Many of us were guilty of forging our mothers’ signatures when we were in high school. That being said, this is sort of unique. A fictitious permission slip needs to be fairly correctly filled out in order to be convincing.
Obviously, this rule-breaker is a little too young to have realized that yet. But, bonus points for having the guts and the courage to take a big chance in order to showcase their artistic ability on stage.