Re- Accuring Dreams

Re-accuring dreams… I keep having the same dream over and over. Not every night but enough to know that I’ve had it many times before. Sometimes some of the people change in it… And I always know when I’m in the dream ( that I’m dreaming- I know that its not real) but I can’t figure out why I keep dreaming about it. I know that dreams are a way of our minds working issues out… So if you have any advice on what this could mean let me know… The dream is… I’m back in school and I’m late for class ( which I do hate being late for anything) the teacher fusses at me for being late (the teacher is someone that I had in school) all the classmates are people that I had gone to school with (btw I’ve been out of school for 6 years) and like I said sometimes the people are different or in different seats but all that I went to school with. And basically the dream is that I get fussed at… But I sit down… And she the teacher keeps teaching and we have to take this test… And I’m SO annoyed that I have to take this test again… ( Its the one where you see if you get to graduate) b/c I don’t understand why I have to take it. I get up to leave and the teacher gives me a hard time about it, and I explain to her that I’ve already taken the test and I’ve already graduated. And I don’t even know why I came back. And every time I have this dream I say that as I’m walking out the door. The “I don’t know why I even came back” … So I leave the school frustrated… That’s basically the dream… But I wish I knew why I keep having it… Its like every month I have it… So any advice will be appreciated. Like I said I’ve been out of high school for 6 years… I did graduate early ( a year ahead) … And I absolutly HATE school- so this dream does annoy me… Lol… And I’ve always been one to stand up for what I believe in and I’m very independent. Thanks for any help!