A judge on Monday declared unconstitutional a 2010 Louisiana law that lets school districts seek four-year waivers from some education laws and rules in an effort to improve student achievement.

State District Judge Mike Caldwell agreed with several teachers unions that the waiver law is an unconstitutional delegation of legislative authority to the state Board of Elementary and Secondary Education.

When he signed the Red Tape Reduction and Local Empowerment Act into law last year, Gov. Bobby Jindal said the act would trim burdensome rules that hinder academic growth and aid low-performing schools on the verge of state takeovers.

Critics countered it would be a mistake to let a state board suspend laws, regardless of the worthiness of the goals.

An attorney for BESE told Caldwell the state will ask the Louisiana Supreme Court to review his ruling.