Ohio Auditor Dave Yost this afternoon releases findings of his statewide probe of school attendance tampering. He'll discuss the records review of a statistically selected sampling of school districts and buildings. Yost launched the review in response to unusual practices discovered in districts in Columbus, Toledo and suburban Cincinnati. He set out to determine whether Ohio schools have been removing poor-performing students from their rolls in attempts to improve performance ratings that can impact federal funding and employee bonuses. Yost earlier separated the Columbus district from the statewide probe when federal authorities became involved and criminal referrals appeared likely. Release of Ohio's performance assessments was temporarily delayed last year amid concern that faulty attendance data may have compromised the rankings.