If you are interested in learning Pin Sun (Koo Lao Village) Wing Chun, I would recommend Sifu Henry Mui in Medford, MA. I believe the name is Mui's Martial Arts Academy. I have limited experience with the actual school myself, but have trained with several of his students (notably Sifu Alix Lavaud). I was very impressed to say the least. The only reason I am not still studying with them is that I moved to another state and they don't teach it out here. He is certainly worth checking out IMO. Another of his students (Frank Ferrara) has a school in Winthrop, called Winthrop Wing Chun Academy. Boston itself is full of kung fu schools, it shouldn't take much effort to find what you're looking for, hope this helps. Good luck with your endeavors
"It is better to know thyself than show thyself"