Updated

The issue of teacher evaluations has been contentious around the country. Now it's brought New York City and its teachers' union to an impasse and harsh war of words that has put the city at risk of losing up to $450 million in state aid and grants.

The conflict between the sides over a teacher evaluation plan means New York City was one a few school districts around the state that didn't meet a state deadline for the evaluation plans.

The two sides blamed each other while Gov. Andrew Cuomo insisted a midnight Thursday deadline for the plan — required from each of the state's nearly 700 school districts — was firm.

Without the evaluation plan, the city stands to lose $250 million in state aid and $200 million in grants.

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