The Alien School (Creative Writing)

I don’t know why but today I got up early so I decided to go to school early and do my homework. When I got there, I had a problem with math so I went to the teacher´s room to find Mr. Barnaby. I opened the door and was surprised to see that my teacher´s we’re all aliens.
 I didn´t know what to do in that moment because I was so afraid, everyone was listening to the principal who was a giant purple alien; on the blackboard was written “world domination”! Then like ten seconds later I realized that no one noticed me so I decided to close the door. But I did it so loudly!
I heard a deep silence,  so I ran as fast as I could, then I heard that a lot of people were running. I was at the entrance’s door when I saw my friend Daniel arriving in his bike. I yelled him and I told him that we had to go away. He didn’t ask me why, he just did what I said.
I arrived to my home and I told  everything to my friend. He was as surprised as me. We were at the living room talking about what we will do when my mother came to the living room. She got angry with us because we were supposed to be at the school in ten minutes. I tried to explain what happened to me, but she didn’t listen to us.
She drove for us to the school and left us there. We didn’t know what to do. We walked to our classroom, there; we sat far of our teacher. He kept watching me like ten minutes... I knew! He recognized me! He walked towards me and as he got closer he turned orange. He was in front of me when.... My alarm woke up. I was sweaty I breathed so fast and my heart was beating a lot.