No teacher has ever done me any good – this may sound harsh but I mean it quite literally. Where I am from blacks are not welcomed with open arms into schools.

About five years ago my family collected enough money to move from where I was born, so that I could have a chance at having an education and living a real life. But without a good knowledge of elementary maths I was slow to progress.

I am now in college and learning more than I ever have in my life. But a poor math background has been holding me back.

I found the Khan Academy in June of 2009. I have spent the entire summer on your You Tube page. And I just wanted to thank you for everything you are doing. You are a Godsend. Last week I tested for a maths placement exam and I am now in Honors Math 200. No question was answered incorrectly. My placement test examiner was so impressed by the breadth of my knowledge of maths that he said I should be in a class for algebra. Mr. Khan, I can say without any doubt that you have changed my life and the lives of everyone in my family.

I wish you and the Khan Academy the best of luck.