Who knew?
Apparently there is a Interscholastic Sailing Association....
"The Interscholastic Sailing Association (ISSA) governs secondary school sailing in the United States, in both independent and public high schools. Sailor eligibility starts at the ninth grade; there are no age limits. As in college sailing, there are seven district associations which schedule events, as well as a system of national championships. While ISSA had its origins in the preparatory schools of the Northeast in 1930, it is now a nationwide organization with active districts in Northeast (NESSA), Mid-Atlantic (MASSA), South Atlantic (SAISA), Southeast (SEISA), Midwest (MISSA), Pacific Coast (PCISA), and Northwest (NWISA)."
https://hssailing.org/about/overview