[Q] Network connection failed topic

I am new on here. I have looked and haven't been able to find anything on the internet that helps much. I am running android 4.4.4 Paranoid. I was using my phone this morning and everything was fine. I was connected to my home WiFi. When I went to school my phone wouldn't connect to internet. I would just say "searching..." I rebooted my phone and and the WiFi appeared and I tried to connect and it said "network connection failed". I can't figure out what is wrong. should I factory reset?, flash a new rom? (by the way I am not super smart and advanced on these kind of things so If your solution is complicated please provide detailed instructions.)