Campuses are very safe places... they usually have different keycards or keys for getting into each block & then you can obviously lock your room too. Some of the modern ones even have each floor requiring it's own keycard too. Typically they don't put girls on ground floor rooms either.

Why are worried about your Dad? I'm sure he'd be proud to see you moving on & becoming independent....

It's natural to have worries like these when you are moving away, it's a scary thing but it should also be exciting too. Try not to let all your anxieties take over, you are over thinking things like chickenfoot says.