I was one during my sophomore year, and I absolutely do not recommend it.
I'm not sure if it's changed in the 3-4 years since I was employed by them, but it was basically trying to meet quotas standing on campus and handing out info cards, tabling, and clip-boarding. My supervisor was really great to work with--and there was the incentive of receiving a Prep course (which I also don't recommend) at a reduced price if you made it past a few months--but it was bad pay and a complete waste of time. Shadowing, volunteering, or doing literally anything else you're interested in would be a better option.