Going back and looking at more than just the report. The "Parent Trigger" is legislation that allows the local school board/parents to take action if a school continues to fail. That opens the door to charter schools, vouchers and other ways of freeing kids from the bonds of failing public schools. What the AFT did in this instance was "water down" the Parent Trigger legislation (in absence of their ability to kill it), to neuter the power of the parents from being the decision makers to just being able to "advise" the decision makers and also putting the teachers union in the decision making process.
The teachers union did this not "for the children", but to protect their union members. And they did it by bending the truth about their true motives, the aforementioned.