Back At school again

I dreamed I was back at school, walking the connecting halls and paths to the different school buildings. From what I could tell, I was back in High School, but it was hard to know because people of all ages were everywhere. Suddenly, everyone rushed to class, and I had to find out where my next class was. I picked up my walking pace and started searching for my classroom. Somehow, I knew to go down a hallway and turn, and someone I knew was there so that I could follow them the rest of the way. When I got to the classroom, I realized it was a big test day. I couldn't imagine ever reading or studying for this class, so I was completely behind and unprepared. I frantically dug through the book before class began, hoping to get some context and knowledge so I wouldn't fail the test. Just then, the teacher came through the door and started handing out the test, so I knew I wasn't going to do well, and I started wondering if I'd have to retake the class.