P.S. 031 Samuel F. Dupont vs P.S. 257 John F. Hylan Compare P.S. 031 Samuel F. Dupont (14K031) and P.S. 257 John F. Hylan (14K257) side-by-side: test scores, climate ratings, demographics, programs, and more. P.S. 031 Samuel F. Dupont (14K031) — District 14P.S. 257 John F. Hylan (14K257) — District 14