Recklessness
If a child is not instructed in this concept, there is no guarantee that they will be able to understand the idea that every action has some sort of repercussion. Even less of an understanding is likely to be held by a child who was born into a family of considerable means.
This kid just wanted to get out of taking a test, and he thought that by making a bomb threat and pulling the fire alarm, he could solve his problem in a way that would be acceptable to everyone involved. We can almost guarantee that he no longer has those feelings!