That article is a one sided view on Prep schools. Prep schools are short for college preparatory schools and are essentially schools that are post high school for generally a year (although most prep schools are actually part of a boarding high school. Many, many prep schools exist to improve academics and many high achieving students use prep schools to improve academics to get into Ivy League level schools. HOWEVER, post high school prep schools can also be used for kids who need to improve their academics to get into college, AND many prep schools have highly competitive sports programs, thereby a convergence of goals create environments where lower achieving academic kids with high quality athletics use the prep schools essentially as a year of remediation. Also, many prep schools are military in nature. In my book if they are legit, and most are, this is just another avenue for a kid to get his academics together in order to go to college.