<P> In response to threats by the University of California to drop the SAT as an admission requirement, the College Entrance Examination Board announced the restructuring of the SAT, to take effect in March 2005, as detailed above . </P> <P> In the 1960s and 1970s there was a movement to drop achievement scores . After a period of time, the countries, states and provinces that reintroduced them agreed that academic standards had dropped, students had studied less, and had taken their studying less seriously . They reintroduced the tests after studies and research concluded that the high - stakes tests produced benefits that outweighed the costs . </P> <P> Frey and Detterman (2003) investigated associations of SAT scores with intelligence test scores . Using an estimate of general mental ability, or g, based on the Armed Services Vocational Aptitude Battery, which can be best thought of as representing crystallized intelligence (learned abilities), they found SAT scores to be highly correlated with g (r =. 82 in their sample, . 857 when adjusted for non-linearity) in their sample taken from a 1979 national probability survey . Additionally, they investigated the correlation between SAT results, using the revised and recentered form of the test, and scores on the Raven's Advanced Progressive Matrices, a test of fluid intelligence (reasoning), this time using a non-random sample . They found that the correlation of SAT results with scores on the Raven's Advanced Progressive Matrices was . 483 . They estimated that this latter correlation would have been about 0.72 were it not for the restriction of ability range in the sample . They also noted that there appeared to be a ceiling effect on the Raven's scores which may have suppressed the correlation . Beaujean and colleagues (2006) have reached similar conclusions to those reached by Frey and Detterman . </P> <P> SAT preparation is a highly lucrative field pioneered by Stanley Kaplan in 1938 and many companies and organizations offer test preparation in the form of books, classes, online courses, and tutoring . The test preparation industry began almost simultaneously with the introduction of university entrance exams in the U.S. and flourished from the start . </P>

When did they change the sat scoring to 1600