Unions only care about money and profit. That's all this is about.
So that means 30,000 teachers wont be going to work tomorrow and over 400,000 students wont be learning anything
So the teahers union (according to the OP's source) are upset over getting 71,000 dollars/year and that they have to take evaluations to determine if they are capable of teaching.
Students are taught simply to pass State Standardized tests and taught nothing of true value, this is extremely upsetting to teachers across the nation, but sure let's kust keep demonizing them because they're Union.