The Blind Brook Board of Education planned to accept his resignation during a special meeting Monday evening.
Stark had two years left on his contract with the school district, according to a report by LoHud.
The school board planned to appoint Jonathan Ross, who is assistant superintendent for finance and facilities, as interim superintendent, effective Tuesday.
Stark, 68, was hired in 2007 as high school principal and became superintendent the following year. He was awarded a four-year extension to his contract in 2013, which paid him an annual salary of $258,000.
School district employees found out about the same-day departure in an email sent at 7:39 a.m. by Jeff Diamond, the school board president, LoHud reported.
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