Answer this questions honestly, regardless of where you are interviewing at. If you are interviewing for a university and you prefer to work at a private agency, express how your position at the university would eventually benefit your work at a private agency, and vice versa.

"I'd prefer to work a private agency for a few years to gain more experience working with different clients from different schools and then transfer to a university. This way, I can become more familiar with different application application processes and bring my expertise to a more long-term and stable career path at a university."