Complex sentence: The school serves an economically poorer student population than any of the historically black institutions around Washington D.C., its socioeconomic peers, with two-thirds of its students receiving Pell grants, though Trinity has a higher graduation rate than several of those peers.
Split into simpler sentences: The school serves an economically poorer student population than any of the historically black institutions around Washington D.C., its socioeconomic peers, with two-thirds of its students receiving Pell grants. But Trinity has a higher graduation rate than several of those peers.