The NFHS requires that all players, goalkeepers, and officials wear a helmet that is certified by the Hockey Equipment Certification Council (HECC), which meets the American Society for Testing and Materials (ASTM) standard. All face masks and shields by players, goalkeepers, and officials shall also meet the HECC/ASTM certification.

You can view all HECC certified products here. 

Order a copy of the 2016-17 NFHS Ice Hockey Rules Book. Available as an e-book and in paperback.