The former superintendent of Limestone County Schools has resigned from his new position after questions were raised regarding his education.

The Bristol Tennessee Board of Education accepted the resignation of school director Tom Sisk Tuesday night. The Bristol Herald Courier said the board accepted Sisk’s resignation after reaching an agreement in which he will receive six months of his $76,000 base pay.

The resignation came after questions were raised about his use of the title “doctor.” Sisk’s holds a doctorate in numismatics – the study of coins and currency – from Ashwood University, an unaccredited school based in Pakistan that offers “life degrees” in exchange for a few hundred dollars.

Sisk, who led Limestone County Schools from 2012 to 2019, typically used “Dr.” in his bio in Alabama as well as Tennessee. When questioned by board and community members about his degree, Sisk claimed he was unaware his PhD was not valid and said his mentors filed for it on his behalf.