SEATTLE — The Obama administration said Friday that two more states, Washington and Wisconsin, will be exempted from many requirements of the federal "No Child Left Behind" education law.

The decision brings to 26 the number of states granted waivers as Congress remains at a stalemate regarding an overhaul to former President George W. Bush's signature accomplishment. With more than half of the states now free from many of the law's requirements, there are questions about the future of No Child Left Behind.

The Education Department began granting the waivers in February in exchange for promises from states to improve how they prepare and evaluate students. The executive action by Obama is part of an ongoing effort to act on his own when Congress is rebuffing him.