I suddenly Changed into a Teacher

I looked around me there were students sitting at their desks and I was in a classroom. They  were all staring at me as if I was sick or had an asthma attack. I looked onto my right,I saw a chalkboard and I looked onto my left I saw a teacher's desk and some old posters and pictures on the wall. One boy was sharpening his pencil and one girl was writing something on her pink girlish notebook,so those two students didn't notice me but all the rest of them were sitting,arms folded,books closed and they were not doing anything but just sit there glaring at me.

Then at last,I looked at myself in the mirror,I looked different. I didn't know what was happening to me and where I was.

Finally,I noticed myself I was wearing those red glasses,because I usually don't wear glasses. I looked at the teacher's desk,there was this huge glass case. And beside it,there were boxes of pens and pencils and there was a huge shelf filled with books of every subject. I took out some of the books that were on this huge shelf and placed them on the desk. I took out a chalk and began to write on the board.