U.S. Secretary of Education Arne Duncan, who says he plans to serve in the Obama Cabinet for the "long haul," has begun sketching out his priorities for the next four years. They include using competitive levers to improve teacher and principal quality and holding the line on initiatives he started during the president's first term. The secretary is also making clear what he won't do: devote a lot of energy to a reauthorization of the Elementary and Secondary Education Act if Congress doesn't get serious about rewriting the current version, the No Child Left Behind Act. Mr. Duncan sees a tough road ahead for many critical state efforts--all of which are encouraged and financed by his department--to put new common academic standards, common tests, and teacher evaluations in place.