John Fernbaugh, 71, of Bowling Green, died unexpectedly Friday, according to the Sentinel-Tribune, the city's newspaper.
Fernbaugh served as Huron Schools deputy superintendent from August 2012 to August 2013, filling in while school board members investigated and eventually fired superintendent Fred Fox.
He previously was superintendent of Woodmore Schools in Sandusky County. His career in education spanned 35 years.
"John stepped in and did a phenomenal job under very difficult circumstances," said Huron school board member Tim Sowecke, who voted in favor of Fernbaugh's hiring. "He always handled things professionally and he worked very hard for the district."
Funeral arrangements are pending with Deck-Hanneman Funeral Home and Crematory in Bowling Green. Individuals can express condolences on its website.