UMass has an advantage that a ranking can't reflect. Students of UMass in the academic alliance can choose courses freely at Amherst College (one of the best liberal arts colleges in the United States) nearby, and the geographical location is really better than Purdue. In addition, UMass has an award. Remember that UMass doesn't have a prize, and the tuition is a little less than Purdue, so the professional ranking is similar. At that time, the recommended level of UMass UMass was by no means 100, just as Purdue's real ranking should indeed be higher than 6 1. Both schools are somewhat underestimated in the USNews ranking. I hope it works for you. Good luck.