P.S. 21 Margaret Emery-Elm Park vs P.S. 005 Huguenot Compare P.S. 21 Margaret Emery-Elm Park (31R021) and P.S. 005 Huguenot (31R005) side-by-side: test scores, climate ratings, demographics, programs, and more. P.S. 21 Margaret Emery-Elm Park (31R021) — District 31P.S. 005 Huguenot (31R005) — District 31