The National Federation of State High School Associations (NFHS) is the legislative body for 17 sports including Artistic Gymnastics.
… According to the 2006-07 NFHS High School Athletics Participation Survey, 1,516 schools offered girls gymnastics in 2006-07, and 18,929 high school girls participated nationwide. …
(via Shergymrag)
one odd High School gymnast photo – source
Gymnastics Coaching.com 