Nevada-Las Vegas, founded in the late 1950's, has grown into being a respected, well-rounded university, but the school has more latitude with admissions standards, as do many state universities, and Tarkanian has specialized in players who were largely overlooked by other schools.
Quite remarkable like you say that Argentina has overtaken Brazil as the leading exporter of South American talent, is this perhaps beacuse Argentina can produce players of a high standard for all positions when Brazil tends to specialise in attacking players?
Yehudi asked for a violin when he was 3, and was was taken to Sigmund Anker, a teacher who specialized in very young players.