I've had this reoccuring dream? HELP...interprete please?

well...I've had this same dream several times and frankly its starting to bug me....foremost I find myself back in high school...(mind you I'm middle aged) and in the dream I'm frantically trying to finish a couple of cles I failed in high school and I then come into the realization that I never graduated and when I realize this I start screaming like all of my life has been a lie.....anyone have any idea what this could mean? I did graduate high school and went on to pursue a 2 college degrees...this one is really a bizarre dream and I just cant figure it out