Sprint/Nextel

offers a 15% discount to teachers; all you have to do is call Sprint

by pressing *2 on your cell phone and talk to a representative. 
or

Call one of the numbers below:

888-211-4727 (Sprint phones)
800-639-6111 (Nextel phones)
800-877-4646 (Wireline services)

Business:

800-927-2199 (Sprint phones)
877-639-8351 (Nextel phones)
877-877-8748 (Wireline services)