ACT and SAT each have their own parts of the country. The GRE has its lock on graduate admissions. And so one could blame the companies but really economically they have no incentive to change things very much because they're getting the business.
There is no recipe to be a great teacher that's what is unique about them.
If you're picking your best friend based on what kind of clothes she wears or...
I will never do another TV series. It couldn't top I Love Lucy and I'd be foolish to try. In this business you have to know when to get off.