Cannot connect to Enterprise Wi-Fi - 2012 Retina MBP

I have previously had issues when i first got my mac connecting to my schools network. Eventually after deleting some files that were related to the Wi-Fi i managed to get them working. Last week i wiped my mac & re-instlled mavericks but now i cannot connect to my schools Wi-Fi. I tried deleting the same files & then it began to work fine until i put my mac to sleep. Then once again it has not been working. I tried those same steps but unfortunately i have had no luck!

Any ideas on how i could get it to work again?

Also note that i cannot ask my school to fix it as they aren't very mac friendly!