When I was in 7th grade my school formed the Robotics club cause I brought mine in one day to show the technology teacher. He has me show the principle and a few weeks later we had a club with 40 members. But due to budget we didn't really do anything, and the pressure put on me was enormous cause everyone assumed I would know what to do.
I'm guessing you may be familiar with Vex Robotics? It's meant for competitions and that sort of stuff. In highschool, 2 years in a row we had 2 teams qualify for the World Championships in Dallas, meant Grant from mythbusters the second time. You may need to do some fundraising for the parts kits and stuff, but it's all really good stuff, sensors includ pots, quadrature encoders, sonar sensors, line trackers, etc. The programming is some basic C++ type stuff. You should check it out.
