page A25 of the 2004-2005 SCHSL Constitution, under "SEVENTH, EIGHTH AND NINTH GRADE ACTIVITIES RULES AND REGULATIONS"; section B.1.: "Students below the seventh grade may not participate in interscholastic athletics. Students in grades 7 and 8 will not be permitted to participate on varsity interscholastic teams in football, wrestling, and soccer."
I believe the League can waive almost any rule if it wants to.
