Khan Academy's budget is the same as a large high school but has the impact at least 500x. Him making 4x a principal's salary I have absolutely no problem with

Khan Academy's budget is the same as a large high school but has the impact at least 500x. Him making 4x a principal's salary I have absolutely no problem with. His opportunity cost is also very high. Salman Khan could get a job tomorrow making millions in annual comp.