Dreaming with elementary school

It's not the first time it happens to me, that's why I would like to know what it could mean. I dream I'm in my 5th grade English classroom (I'm actually in 11th grade). Sometimes with different professors, different groups (for example my 4th, 8th, 10th grade classmates) and even taking different classes (science, etc.) but it's always in THAT specific classroom.

Last night's dream was about an English class with my actual group. There was this strict professor that kept scolding me for no reason and he kept moving me from chair to chair every time although I was the only one in the class who was answering to his questions correctly. The last time he scolded me in the dream he said something like: "I swear I don't know what else to do with you! You're intent, you're very smart (I actually am xD), and you that SOMETHING... " (there he cut off and continued with the class. What could it mean?