Updated as of 6/2/10:

Fort Mill
Clover
Northwestern
Lexington
Ashley Ridge
Westside
Hilton Head Island - tentative
Stratford Academy (GA)

Olympic (NC)
Porter Ridge (NC)
Charlotte Catholic (NC)
Lake Norman (NC)
Crest (NC)
Forsyth Country Day (NC)
Weddington (NC)
First Presbyterian Day (GA) - tentative
Blythewood - tentative

Kids play sports because they find it fun. Eliminate the fun and soon you eliminate the kid.