Is a jockstrap still required for high school athletics?

'Based on an internet search of rules for PE and after school sports, at some high schools jockstraps are required, especially for boys playing on sports teams but also for PE at some schools. Usually, the rules refer to them as "athletic supporters". One school district has the following policy: "Minimum appropriate attire for boys and girls is considered to be: shorts, T-shirt, tennis shoes, socks, and for middle and high school boys, an athletic supporter." One high school has an "Information Letter To Boys High School Lacrosse Players and Parents" that lists among required equipment for both practices and games "Athletic supporter with protective cup".