This is VERY SUSPICIOUS....
What kind of kid skips out of school, and then finds out and would care enough TO RUN BACK TO THE SCHOOL for the shooting drill???
Does that sound like a normal behavior for a high school student skipping school?
Most kids skipping school would be more interested in playing their XBOX or whatever they are doing. The last place they would want to go is to school.
How did Hogg know there was a drill, who in the school reached out to him to tell him this???
"...this is VERY SUSPICIOUS..."