I am a MFA student at Pratt in Painting/Drawing and I think Pratt is fantastic for abstract painters. Almost the entire painting faculty is comprised of abstract painters. And the painting profs are excellent, amazing really. Not only are the painting profs, but there are also a handful of great NY critics teaching at Pratt. That and there have been some abstract painters who have graduated from Pratt in the last couple of years (like Trudy Benson) for example who have done really well. I think that Pratt is really worth looking into. The school is amazing and the campus is incredible.