NOT A TEACHER
Let's say that a man has one college degree. Let's say that he becomes
president of the company.
Let's say that a woman has two college degrees. Will she become president?
According to the saying, the answer is NO. Although she is twice as good
(she has TWO degrees; he has only degree), she will go only "half as far."
That is, she will become only a manager, not the president.
P.S. Of course, this is only a saying. Today many women have top jobs. And some
countries have female leaders (Germany, Argentina, Brazil, etc.).