I've been teaching middle school math exclusively for 14 years. KA has encouraged my students to reach further, to try harder, and to think more carefully than any other math program or textbook I've used. Ever.

Each year I set the bar higher, and each year that group of students grows to reach it! An ad-free, no cost program to help teach students? How did we ever do it without Sal Khan's vision?!

Thank you, Khan Academy and Sal, for creating this wonderful world-wide resource!