I also applied and got accepted there. This past Saturday, they had a "Meet the Dean and Faculty Members" luncheon that I attended. Honestly, two of the professors seemed extremely boring, but two of the professors seemed interesting, knowledgeable, and nice. All of the professors talked about how they were there to help students, so if you have any questions about content or specific classes or anything, email or call them (it is their spring break this week as a head's up). They require that all grad students complete one internship (you can also complete another for 3 more credits). They have one staff member whose only job it is to meet with students and help them find appropriate internships. They had a bunch of current students and alumni speak. They all had amazing sounding internships at places like the UN, Council on Foreign Relations, the State Department, PBS, etc. Alumni now have jobs at the EPA, State Department, Department of Energy, USAID, different embassies, and places like that. A lot of the alumni help current students get internships where they work. I know alumni wouldn't come to an event like this to bad-mouth the program, but they all seemed to honestly LOVE the school and where they were now. The Whitehead School is an APSIA Affiliate School.
Honestly, South Orange is a crappy, not so safe town. But there are plenty of nicer towns nearby. There are trains that are near campus that go to New York Penn Station in 30-40 minutes.
If you have any other questions about it, feel free to ask!