These are stats reported from a few years ago(2013), fwiw: (if 2 million students spent 2.5 BILLION/year = 1250 per student per year who took the exams. 2.5 billion would go a long way toward other, more rational identification measures- although my guess is that number includes more than just ACT/SAT tutoring.)
"Over 1.66 million students took the SAT last year, and for the first time, the number of students who took the ACT surpassed SAT takers by about 2,000 students. Many students take both tests, take them multiple times during their junior and senior years, and take the PSAT, SAT II subject tests, and Advanced Placement tests. These tests are an industry unto themselves, with millions of dollars spent on test fees, administration, and preparation.
The tests also carry additional fees for late registration, standby testing, registration changes, scores by telephone, and extra score reports, each of which ranges between $11 and $55...
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The College Board and the Educational Testing Service, both private nonprofit educational testing organizations, administer the SAT. The ACT is administered by ACT, Inc, also a private non-profit.
Americans for Educational Testing Reform has criticized the organizations for collecting millions in profits while maintaining their nonprofit status and therefore avoiding federal taxes. College Board spokesperson Leslie Sepuka, says, however, that all of their profits are invested back into programs and services, including a fee waiver program for low-income students.
The executive salaries at these organizations have also come under fire… The former president of the College Board, Gaston Caperton, for example, took in $1.3 million, including deferred compensation in 2009, according to tax records–more than the president of Harvard University. He stepped down last year and his successor, David Coleman, now earns a base salary of $550,000, with total compensation of nearly $750,000.Richard Ferguson, the former CEO of ACT, Inc., received $1.1 million including retirement benefits in 2009.
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According to a March report from IBISWorld, although profits fell briefly during the recession, the tutoring and test prep industry generates an average of $840.4 million every year and employs more than 115,000 people. And a 2009 report from Eduventures calculated that about 2 million students spend $2.5 billion a year on test preparation and tutoring."
http://www.thefiscaltimes.com/Articles/2013/05/01/SAT-Tests-Another-Drain-on-the-Family-Budget