From the article:
[School Board President] Vanderslice said that at the end of the day, when the child was showing the gun to some classmates, another student told a parent who promptly alerted school administrators. The administrators, in turn, contacted police.
When officers arrived at the school, they took the child into custody. The gun and ammunition were still in the child's possession, according to Vanderslice.
In a statement to parents, Vanderslice wrote, "Laurel schools are doing the utmost to protect your children, but we also need parents' help. The only way this child was able to bring a gun to school was for it to be available for the child to pick up and place it in his backpack. If you have guns, please make sure they are secured and talk to your children about the serious consequences of this child's action. Luckily, no one was injured in this incident, but we as a community have to be diligent."
Or better yet, don't have a gun in the home with a child.
Every gun in the hands of a child must first pass through the hands of an adult.