The Royal Hoax lobby group has filed a lawsuit against the province asking the courts to halt the proposed relocation of Moncton High School.
Moncton High is more than 75-years-old and the New Brunswick government intends to replace it with a new facility on the outskirts of the city.
But opponents say the school needs to remain downtown rather than be moved to a site about eight kilometres from the city's centre.
The Department of Education committed to building a new school after Moncton High was closed in 2010 over health and safety concerns.
The inner-city school reopened to students last fall.
(CKNI, The Canadian Press)