About Rensselaer Polytechnic Institute. Rensselaer Polytechnic Institute in Troy, NY reports an overall acceptance rate of 63.4%, an early-round acceptance rate of 57.9%, an SAT middle 50% of 1390–1500, a class size of 1,314, and a yield of 18.0% based on the most recent Common Data Set filings. Oldest technological research university in the US (founded 1824). Strong CS, engineering, and game design programs. High ROI for STEM graduates in the Northeast.