Facebook graduating year?

Some peoples facebooks I see do not have the graduating year only their high school for example mine looks like this:


___________ High School (year here)


but some peoples I see say this


____________ High School





and thats it no year next to it... how?

Facebook graduating year?
Under where you edit your profile information, when you put your education information, just don't put the years you attended, also dont put that info in when you join the network.