Why is the GOP focused on teachers' unions?

It's really pretty clear if you study the issues - although there is no evidence that private schools do a better job of providing education, Republican corporate friends stand to make a fortune if public schools can be turned over to corporate interests.  Then you will wind up with a stratified educational structure (schools for rich and schools for poor) with huge profits to be made as government funds are turned over (in the form of vouchers and tuition) to private corporations.  To hell with educational quality when there's a profit to be made.  Click on the link below for further insight.

To Turn Schools Into Profitable Warehouses, Corporations First Need To Destroy Teachers Unions