I am working with my dd's elementary school. I will be running the math club with the GT specialist. Her son is in the same grade as my dd and is a math whiz. I am writing the grant but the GT specialist's name will be included on the proposal and the principal will sign it.
If you are willing to do the administrative part of the club it may not be difficult to find a teacher to help out. I've been successful in getting teachers to help out with a variety of activities if they know they do not have to be responsible for planning or organizing.
If that doesn't work, you may be able to find a high school or college student to help. In some high schools students are required to do volunteer work. We ran a large part of our school carnival last week with volunteer high school students. Also, some businesses will allow their employees to volunteer at local schools. You may find an engineer or mathematician who would serve as your math expert.
