after teaching audio production for two years at mckinley tech, she was fired three years ago. she says without cause by the dc public school system. >> we were doing documentaries and really phenomenal things when out of the blue just, hey, you're fired type deal. >> reporter: recently an arbitrator ruled she was wrongly dismissed. so sometime in the next few weeks she'll be back in the room. she was one of about 660 dc public school teachers who have gotten their jobs back in the past three months alone after arbitrators ruled they should not have been let go in the first place. according to sanders, the recent rulings are what he's been saying for sometime. >> they point to a pattern of wrongful terminations that are by a lack of due process. >> reporter: it's not just a matter of right and wrong but dollars and cents between arbitration fees, legal fees and the various cost of reinstating teachers, taxpayers have had to pay about $17 million in the last six months alone. >> the district is wasting a tremendous amount of money in terms of legal fees, arbitration fees. becaus