I will second the remark by bodangles that students at almost all colleges, public or private, simply go off-campus to drink and the administration can do almost nothing about it. If you are looking for colleges that threaten students with expulsion for drinking, you are largely limited to very conservative religiously-based colleges. In Ohio, these are probably limited to Cedarville, Mount Vernon, and perhaps a few others; but these issues will certainly exist on a large scale at OU, OSU, BGSU, Kent, Cincinnati, Dayton, etc.