I don't know.  Its a very long classroom and the shooter came in on the other side.  Its got a bit of curve to it so I never even saw the shooter.  Wasn't even sure if it had been in the same room as me for a while because I didn't see it I only heard it.  I was literally the closest person to the door and yet I wasn't first out the door.  A lot of thoughts and emotions really quickly, waiting to see if there would be a second bang (perhaps stupidly, I entertained the possibility it was a balloon), disbelief, and then fear I was gonna get trampled as I had people pushing on my back trying to get out as well.  I ran for a bit towards my apartment and one kid that ran yelled that there was a shooter.  I just kept running even past people walking towards where the shots came from.