Back in 2010 when I first heard about Khan Academy and started using it the videos were incredible but the exercises were limited at best. Over the past six ye

Back in 2010 when I first heard about Khan Academy and started using it the videos were incredible but the exercises were limited at best. Over the past six years I've seen the quality of the videos, the exercises, and the tracking of student progress improve at least 10x on the whole. Ben has played an massive role in the development of Khan Academy and though it, has effected the lives of millions of students myself included. If you are reading this, thank you so much for all of your hard work.