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Teacher Hiring Gets an F in Maine 

The National Council on Teacher Quality says only Iowa and New Mexico require any evidence that public school teachers are effective before granting them tenure.

Teacher hiring and firing is done locally in more than 14,000 school districts nationwide, but state law governs virtually every aspect of teaching. The group says tenure is virtually automatic in most states.

All states were given letter grades, earning a D-plus on average.

South Carolina got thehighest overall mark, a B-minus.

Maine, Montana, New Hampshire, Rhode Island and Vermont earned F’s, as did the District of Columbia.

The National Education Association, the biggest teachers union, said inadequate, ineffective and misused teacher evaluation systems are to blame, not the job protections.