I went through high school with DP and thank goodness I graduated. I'm only 18 so maybe I sorta count? 
My man will here will not steer you wrong!I unfortunately had to drop out with the onset of my DP, I really wish I was able to fully complete it, but I could barely leave my room without having a total melt down. My suggestion is to soldier through it the best that you can, try not to let the bad days get to you, its worth getting it over with instead of waiting.