Is khan academy sat prep free?

The official SAT practice at Khan Academy is a world-class SAT preparation that is effective, personalized for your child and 100% free. In the past, preparation for the SAT was characterized by paid courses and the order of thick books to help students master word comparison exercises and memorize so-called “SAT” words. Gone are the days of test preparation courses in which students and their families received hundreds or even thousands of dollars.