This can be a tricky question.  What the interviewer is trying to figure out is if you will be departing soon to earn an advanced degree.  Some companies may be looking for this (the many companies that help pay for an MBA) or they may be looking for someone to learn and advance on the job.

You’re going to have to decipher what the organization you’re interviewing with is looking for.   Try looking on their website and see if tuition reimbursment is a benefit.  If they offer those benefits,  they may encourage their employees to pursue higher education.  I would suggest letting the interviewer know that you will be working in the best interest of the company.  This can be interpertued to mean delaying schooling if needed or possible re-entering the classroom.