It’s a myth that young people don’t care about privacy — it’s all about context! Give them a concrete example they can relate to, and they care big-time! Also check out the research by Dana Boyd at NYU: they DO care.
Maybe it's about the framing. If you ask students about privacy (an amorphous concept), they may shrug.
But ask them if it's OK for colleges to make mental health predictions about students by tracking when they swipe their ID cards at the gym and library--and boy do they care