A former Olean High School special education teacher, who is a convicted sex offender, as well as his elderly mother, have been charged with welfare fraud. Robert and Helen Washington turned themselves into police after a complaint was filed by the Cattaraugus County Department of Social Services. Robert Washington is charged with submitting false filings with the Supplemental Nutrition Assistance Program and Home Energy Assistance Program. His 74 year-old mother Helen is accused of welfare fraud and making a false written statement.