The average salary for a preschool teacher is 23,460 so what you are saying is that we need to get a bachelors degree, go through the hoops to maintain that degree, to be paid less than 5,000 dollars a year than someone with an associates degree and can pass the background check. Why on earth, when we need our children to be more educated than ever, would you want to start a race to the bottom of the barrel for the teachers that are supposed to get them there.
That means that half of public school teachers do have advanced degrees. Research says that additional training directly results in better outcomes for their students. So does teacher experience. If Walker gets his way there will be no financial incentive for teachers to go get the that additional training. If pay raises can only be negotiated up to the cost of inflation, no one will stay longer than a few years because with each year they would fall farther and farther behind where they started.
On a side note, several of the best school districts do require that masters. We should be pushing up requirements. We want to get the best people in the classroom not the ones you can get for the cheapest.