I was 13 on Sept 11th, 2001. I remember being in school hearing something had happened but the school insisted on progressing through the day as if nothing was going on. My next class was Choir, so we stood on the risers, the teacher came in and started handing out the music for the song we were working on ... something incredibly inappropriate for the mood in the room, something like "I am happy all over" .. something very happy and upbeat.
She stood in front of us with a smile started to go through the music and she stopped mid sentence. Stood there for a second, and said "I can't do this. I wont do this. I refuse to sing or direct you guys to sing about being happy when the world is so sad."
She directed us to the commons area for the remainder of the class period and she turned on the TV, we then watched the second tower fall live, mere seconds after she turned it on. It is something I will not forget. The bell rang, and we went to the next class where those teachers had no problem pretending like the world was fine.
Whether it was in effort to protect us from panic, or themselves from panic .. I am still angry at them for doing what they did. I had to watch the towers fall, then expected to switch that off for a math test. I hated it.