Is this aka US Div1/2/3 College tennis system. http://www.ncaa.com/sports/tennis-women/d1 http://www.collegetennisonline.com/ http://www.usta.com/Play-Tennis/College-Tennis/
Probably a useful option for good players coming out of high school at satellite circuit level or close to, who want a tertiary education and can get a funding scholarship.
Bengson and Boj for eg have taken this route, thou now seen as "journeywomen" as they are a bit older than the TA magical 17-22 mark and expectations they would already be in top 50-100 peaking early (like Kvitova, Azarenka, Pavulchenkova, Sharapova etc). But over past 2 decades the model has changed to players peaking in mid to late 20s (female and male). Some coming from US College system going onto bigger things - Craybas, Blake, Anderson, Harrison, Isner.