“When college-bound high schoolers take a test-prep class with Anthony-James Green, they see an average boost of 350 points to their SAT and 3.7 points to their ACT scores — enough to make a mediocre student suddenly shine in the eyes of an admissions officer. That’s why, for years, Green was able to charge $1,000 an hour for his Skype-based services.” …
http://www.techinsider.io/green-test-prep-is-no-longer-for-the-1-percent-2015-8