The measure, which remains in effect until the end of the 2012-13 school year, was signed Dec. 22 by President Barack Obama as part of an unrelated federal spending bill.
The legislation nullifies a Sept. 27 decision by the 9th U.S. Circuit Court of Appeals, which ruled that California illegally classified thousands of teachers in training as "highly qualified" in violation of the federal No Child Left Behind Act.
Under that law, all students are supposed to be taught by "highly qualified" teachers who have earned state teaching credentials, but a 2004 Bush administration policy allowed states to give that status to interns working toward certification.
