a suggestion or two (Score 1)

here at my high school, we've got plenty of kids interested in science, math, technology, etc. to get kids interested in whatever you're selling, i wouldn't say to start an entirely new competition or event, but to see what already exists and slap your name on it by sponsoring it. if that's not possible, then google 'robotics competitions' or something of the like, and mimic their formats and start one of your own. sure, the kids who do this get made fun of, but if they all have one purpose through a competition, you'll get their interest.