I'm a big fan of
this.
Failing that, your should consider why it is that students join FIRST.
1. FIRST is one of the best things you can put on a college application or resume. Add to that the scholarships available, and you should be able to attract some of the better and more aspiring students at your school based just on that.
2. Some kids just love science and technology. Demos or displays that show off what you get to do in FRC will surely draw the more technical of your students.
3. FIRST teams are families. On our team, word of mouth and personal friends are the top recruiters. Take care of your own, and their friends, girlfriends, boyfriends, and peers will see what they have and come running.
4. You can do more than just engineering as part of a FIRST team. Business, math, web design, animation - and with this year's rulebook, law - are all represented as part of a complete team. Make sure you get that word out!
5. FUN! If there is a competition nearby your school, try and get a busload of interested students to spend a couple hours in the stands. At our school, we got many teachers to give extra credit for attending. FIRST is nearly impossible to describe in only words - immerse students in the environment of a competition, and recruitment will follow.