I have been using Khan Academy for over 7 years growing up. It has helped tremendously and taught me to be a critical thinker. There are exercises, quizzes, and

I have been using Khan Academy for over 7 years growing up. It has helped tremendously and taught me to be a critical thinker. There are exercises, quizzes, and unit tests to test a student's understanding and if they get something wrong, KA marks what videos or articles they should go back to and review. I agree with one of the commenters here, this article is uncharitable.