wifi troubles
So i asked my principle for the schools password and he gave it to me and i put the pass word into my ipod and it connected to he wifi and the wifi bars were all the way full i whent to go get on yahoo and a lot of different sites and it dosent work it says netwrok univalible but the wifi bar at rhe top left of mscreen is all blue so i need helpp
iPod touch, iOS 5.0.1