On Monday, the Kansas National Education Association--or KNEA--promised to file a state-court lawsuit against a new law that eliminates teacher tenure in public schools.
The KNEA represents 23,000 educators in Kansas.
The measure was attached to a school funding bill that takes effect in July.
The law increases state aid by 129 million dollars for poorer school districts, in order to comply with a Kansas Supreme court ruling that found Kansas was not adequately funding its schools.
The union strongly objects to the tenure provision of the bill.