Going to primary school

Date: 9/12/2018

So I am having school in a building that looks just like a primary school building: small building, not many rooms. But I still have my high school subjects and the teachers. I have one subject and after that i leave to another subject, WID. My teacher is there. I sit in the lesson for some time, but somewhere in the middle of the class time, i just leave the class for something. When i come back again, WID is over and i ask someone what happened in the rest of the class time.