In the top bar, clicking the network icon shows a list of networks. My school's network, which on Windows I would connect to, and then visit a login page in Chrome in order for it to work, shows on the list.
When I click to connect it shows it connecting, and then says that I am not connected to the Internet.
I am using elementary OS 0.3 Freya.
eth0 no wireless extensions. wlan0 unassociated Nickname:"rtl_wifi" Mode:Managed Access Point: Not-Associated Sensitivity:0/0 Retry:off RTS thr:off Fragment thr:off Power Management:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 lo no wireless extensions.