The SAT® has changed. Rather than drift off into oblivion, the SAT folk (ie the College Board) changed directions!
In March 2014, the College Board announced a complete overhaul of the test. It's becoming much like their arch rival, the ACT!
The new SAT is no longer referred to as the Scholastic Aptitude Test. Its an test of academic skills, not than the old of aptitude or IQ. Basically, it tests what you've learned in Math, Reading. and Writing.
Prepworks software helps student prepare by both familiarizing them with the test questions, providings strategies for approaching the questions but most importantly, it actually builds the skills that the SAT tests. In some ways, its a course totally focused on the skills that the SAT will measure.
In terms of knowing the strategy for test taking, here is some of Prepworks info on scoring: