BATON ROUGE, La. (AP) — The president of a teachers' union says his group will again ask a district judge to toss out a state law that makes it harder for public school teachers to earn and retain tenure.

Steve Monaghan, president of the Louisiana Federation of Teachers, tells The Advocate the group's original lawsuit will be changed to include three new complaints aimed at derailing the measure.

The law was struck down March 4 by state District Judge R. Michael Caldwell in Baton Rouge.

But the state Supreme Court on May 31 vacated Caldwell's decision and returned the lawsuit to his court for more arguments.

The court essentially said that there was insufficient evidence to strike down the tenure law on the grounds that it included too many subjects.