Here is an outline of stuff you should know. It is game centric. I assume by graphics development you mean games, but this list applies to both anyways
- the class is good, the math learned will be important
+ your school most likely has a graduate graphics class as well. take it even though it might not count on your gpa
- know c++
- opengl is fine, make some sample apps in d3d also to get a feel for it
- Learn about engines. Most game programmers dont deal with the low level stuff anymore. Make a couple demo games using a popular engine. Torque is good.
- learn about shaders
- read siggraph papers and try to implement some of the techniques described therein
- The key thing that game companies want is experience making games. Make your own games and release them or contribute to existing open source games. This is by far the most important