Trial and Error

I was a young boy, and I believe it started on a bus. Me and a teacher, or just adult helping out, were the last two people on the bus. He either threaten to attack me, or attacked me, the beginning of the dream is a bit fuzzy. In any case I spent the whole dream trying to not find myself alone, because I knew he would kill me. I thought about telling someone else, but I figured he would just kill them to.

For whatever reason, the group I was in spent a ton of time on ladders. Putting stuff on shelves, changing lightbulbs and what not. (probably because I am a facilities worker irl.) Some ladders were really tall, none of them were a normal size.

He tried to push me off a few ladders sending me crashing into (luckily) random piles of non-lethal things. I finally refused to go up a ladder without someone else with me. One of the teachers began to realize I was acting strange and got me to tell her what was going on. She decides that we should go and confront him.

We go to his house and knock on the door. He opens the door and without another thought shoots me in the chest. I go tumbling backwards. It was then that I realized that guns and shot were two of my dream themes, and that I must be dreaming.

I suddenly was the teacher, and began to walk towards the guy all terminator style. He continued to shoot, but they just ricocheted off of me. I said "this is a dream, you can't hurt me."

I forget exactally what happened, but I destroyed him.