Chris,
From what I read, it sounds like your program is similar to my school district's
CAPS program. CAPS stands for the Center for Advanced Professional Studies. It's pretty much the same as your "Career Center" building. Anyways, our team functions as an extra curricular activity who happens to work out of CAPS. We do our recruitment through having members from each school put up posters and our PR team keeps track of each schools respective "activity night" where the clubs for the school run a booth to showcase their club. I suggest that you get in contact with either members from each school or each administration and ask if you can put on demonstration nights (or even STEM assemblies if you can pull that off with some other choice clubs). Basically what I'm saying is that your Career Center is just your meeting place; the local schools should be where you're drawing from.
If you need further assistance, you can PM me here or email me at
CalvinTran01@yahoo.com.