Gluberman, 67, was treasurer of the Greenburgh Teacher's Federation and the Greenburgh Teacher's Welfare Fund, positions he held as a volunteer in the union as a longtime teacher in the district.
He was arrested in January 2014 and pleaded not guilty earlier. When Gluberman was promoted in September 2012 to assistant principal at Woodlands High School, an union audit revealed that money was missing.
Gluberman, of Congers, was charged with second-degree grand larceny after allegedly stealing more than $770,000 over a six-year period.
He pleaded guilty Wednesday to second-degree grand larceny, a felony. He is accused of using the money to pay for property taxes on two homes he owns and other personal expenses. Gluberman remains out on bail and on paid administrative leave from Greenburgh schools.
According to the Westchester County District Attorney's office, he is expected to pay back the money when he is sentenced.
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