I am under the same situation, as an international student I am not sure how both schools rank in the field and which one is better to secure jobs after graduation. The smaller classes at Yale are a plus in terms of learning experience, however the bigger network at Columbia also helps a lot. I am under the impression that SIPA holds more events for the students to network too and while both schools have an amazing reputation in general, Yale's brand seems to be more prestigious. Additionally, I really love New York and all that it offers and am very concerned with New Haven's bad rep. One thing is for sure, New Haven is cheaper than New York. Really torn between both schools, would love to hear what others think.