Khan Academy is the worst website I have EVER used. It does not help you to prepare for the SAT, it does not help you when you get questions wrong, and it is plagued with network timeouts and errors that make using the website a frustrating experience. Also, it does not even calculate accurately the time you spend on it! On one occasion I spent 2 hr 30 min on there and it only recorded about 1 hr of time! This website is HORRIBLE!
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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
