Updated as of 9/30/10:

Fort Mill
Clover
Northwestern
Lexington
Ashley Ridge
Nation Ford
Stratford Academy (GA)
Rock Hill

Olympic (NC)
Porter Ridge (NC)
Charlotte Catholic (NC)
Lake Norman (NC)
Crest (NC)
Forsyth Country Day (NC)
Weddington (NC)
South Mecklenburg (NC)
Marvin Ridge (NC)
Providence (NC)
First Presbyterian Day (GA)
Kettle Run (VA)

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