East Hampton Town police spent Tuesday morning investigating an anonymous email threat received overnight by multiple school districts and ultimately deemed it “noncredible.”

“It’s a record price per square foot for any commercial real estate transaction in the Hamptons, ever,” said Jeremey Tahari of Tahari Capital, whose father, Elie Tahari, sold the building at 1 Main Street in East Hampton for $22 million to Bernard Arnault, named by Forbes last week as the world’s richest person.

An unprecedented influx of 18 new students arrived this year in the Wainscott Common School District, a tiny school that educates kids in kindergarten through third grade and pays tuition to send older children to nearby districts. The influx led to sharply rising tuition costs and left the district facing an anticipated budget deficit of about $902,000 this year, as well as a projected increase in next year’s budget of about 43 percent.

In East Hampton Town, the massive geotextile sandbags that are used to protect waterfront properties from erosion are allowed on only a temporary basis — for just six months with the potential for a three-month renewal — but in reality those erosion-control measures have sometimes remained in place for years.