The BBJ has an interesting list of Massachusetts colleges with the highest earning potential. Not surprisingly, MIT’s potential payoff ranks first in the nation and state, according to PayScale. But the big (pleasant) surprise was Babson, which ranked fifth in the nation and second in the state. … The second biggest surprise: Northeastern’s comparatively low local ranking. … The fourth biggest surprise: two prominent schools are not on the top 20 Mass. list. Can you name them?