Thanks guys!
I'll try to implement your suggestions. For the presentations to middle school students, would it be better to present in a smaller, more intimate classroom setting or an all-inclusive, larger setting in the gym which seats the entire school?
As far as driving the robot around the school, I like the idea. But I'm afraid our high school's administration might not

They're usually pretty strict.
We can present at pep assemblies though. Our problem is that we haven't been able to spark much enthusiasm for our robotics team (our state-finalist varsity football team usually gets all the attention

)
Thanks so much!