The principal of Flushing HS in Queens was busted with a baggie of methamphetamine about a block from the school, cops said yesterday.

Carl Hudson, 33, was arrested Tuesday at about 8:35 p.m. on Northern Boulevard near Parsons Boulevard, cops said. He was charged with criminal possession of a controlled substance.

Hudson earns $132,633 a year as a principal, according to records.

The school was among those slated to be closed and reopened with new staffs. But last week, a Manhattan Supreme Court judge nixed the city’s attempt to overturn an arbiter’s decision, killing the plan.