The word power normally speaks for men. Women are able to have children and then go right back to work, but men still have all the power in the business world.
A woman can do a man’s job during the same time doing her own as raising children, taking care of the house and so on. Women who work more than their men get no appreciation for it since they “need their men”.
For this reason Beyonce asks the rhetorical question “who run the world” and the answer is “girls”. Girls work their nine to five without getting enough paid for it while raising children at the same time.
She sings, “Im repping for the girls taking over the world, help me raise a glass for the college grads”. To illustrate this mainly women, according to statistics, graduate from college.