So let's see.
Gun theft: Felony
Minor in possession of a handgun: misdemeanor, felony in some places. In CA it's a felony for the parents.
Concealing a handgun: Misdemeanor or felony depending on where you live.
Taking a gun onto a school bus: Felony
Taking a gun onto school grounds: Felony
Not to mention that a school resource office might just kill the kid.
This is left wing bat-chittery taken WAY too far.