The road outside the Guilford county school had recently been re-paved, and road crews were ordered to mark the school zones last week.
A spokesman for Traffic Markings, the contractor that painted the faulty sign, admitted that workers had "made a mistake" and said the sign would be fixed.
Another employee, who did not wish to be named, told the US news station KSBW that the error had caused amusement within the company.
"We're trying to find someone who can spell and get them out there to fix that ASAP," he said.
The error was not the first misspelling in the area; just last month, a resident posted a photo on Facebook showing that the town's name had been misspelled as "Guiliford" on a detour sign printed by the state's department of transport.