If the rankings are truly based on talent and how well they perform in high school, then anyone can be ranked high.
Not everyone, shirley. For example, the untalented will be ranked low, as will the underachievers. Both those groups, as well as the ubiquitous stupids, will be denied the opportunity to be highly ranked, based merely on their lack of skill, accomplishment, and intellect. Which is unfair IMHO, especially in the United States in the 21st century. If order for this country to move forward from yesterday into a tomorrow that is both post today and pre next week it's critical that everyone have not only equality of opportunity, but equality of result.
Obviously it's obviously impossible to lift those at the bottom up to the top: unfortunately we lack the technology that would allow a Stephen Hawking to play basketball at the high level as does a Lebron James, just as we lack the technology that would allow Lebron to intelligently discuss black holes with Sheldon and the gang on the hilarious situation comedy The Big Bang Theory, as did professor Hawking in the recent episode entitled Wow I'd Really Like to Pound That Penny. What we do have the technology to do, however, is level the playing field so that Lebron James could ball with the same skill as Stephen Hawking and Hawking discuss top down cosmology with the same acumen as James. To that end I suggest that talented players be fitted with weights, braces, and other contraptions that limit their skill and mobility; that overachievers be medicated with lithium, thorozine and saltpeter that thwarts their drive and determination; and that heady players with high basketball IQs be stunned by blows to the head and in extreme cases lobotomized. Only then will "anyone" have the ability to be highly ranked and only then will we as a country inherit the legacy bequeathed us by James Madison, Earl Monroe, and the other founding fathers.