I had a very strange experience on secondary school

I don't know if it's real or just a dream<br>I had a weird experience on my first day of secondary school<br>I was very nervous and I was running so late and I remember seeing a classmate walking in the hallway, I stop , and I asked her for help<br>She showed me where the class was, I put my bag on the table and then she took me back to the entrance of the school ( which is weird because it was my first day and I knew where all the classrooms were) and I asked her "what's your name" she said L (I don't remember the rest) but I was curious so I asked her if we were in the same class, she said "no"<br>I went to the class, and I saw a classmate that looks like her but with shorter hair, and she introduced herself to me and said that her name is L<br>I asked her if she was the one who helped me and found the classroom, she said "no" I was confused , then I saw another classmate with the same face and hair, in the hallway it was like that was her real face and the other two was like copies of her , and I asked her "are you the one who help me"<br>She said "no" and she told she has 2 sisters but none of them were in my school<br>I was confused, I thought maybe I was just dreaming or hallucinating, but I know that I wasn't<br>I know that my school wasn't a simulation because of all the other things that happened ,but it felt like a simulation.<br>I'm going crazy