Are Guardian Caps Allowed in High School Lacrosse by the NFHS? Yes, Guardian caps are permitted by the NFHS for high school lacrosse. Request the official letter here. Anne Crawford2025-04-09T14:08:05-04:00April 9th, 2025|Guardian Caps| Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTumblrPinterestVkXingEmail