Repression

There's no other way. You begin blasting the room with buckshot, and don't stop shooting until you're sure everyone is dead.

The room is covered in gore. You look at Jessica and kiss her blood soaked lips. There just wasn't enough time.

You exit the class room. You hear police sirens and bullhorns screaming at you to give up. Most of the school has been evacuated at this point.

Just you alone in the school and the cops waiting for you outside now.