Former state Sen. Ernie Chambers has filed a grievance with the Nebraska Supreme Court that says the Omaha school board's lawyer committed "gross negligence" while handling the Nancy Sebring case. The district hired Sebring, who was superintendent in Des Moines, Iowa, in April. Sebring abruptly left her Iowa job in May. She lost the Omaha job after emails sent on a Des Moines district computer to her lover became public. Chambers says attorney Elizabeth Eynon-Kokrda should have informed the entire board about the emails rather than conferring only with board President Freddie Gray. Gray has been criticized for her handling of the Sebring matter, but the board voted on Aug. 6 to retain Gray as its leader. No comment so far from Eynon-Kokrda.