Hey Winnie,
Check out the NYC Dept of Education website and see if there are any openings for School Social Workers. I'm in the process of getting a Master's in School Counseling, and the school where I'm doing my practicum has a School Social Worker there. I also know someone who just got a position as a School Social Worker, and she worked as a Social Worker someplace else before that.
Do you know any relatives and/or friends who work in the school system? If so, speak to them.
If you do become a School Social Worker, at least you'll have all the school holidays/vacations to look forward to.