On Friday morning, the Supreme Court of Canada overturned an Appeal Court of B.C. ruling and sent the case back to the B.C. Supreme Court for the next stage of the proceedings.
Nicolas Rouleau, the lawyer for the parents association at the school, said the court sided with a B.C. Supreme Court judge's ruling in 2012 that found the rights of students at a Francophone elementary school in Vancouver have been violated.
"My clients are ecstatic. They're happy. They've been fighting to get equivalent schools for their children in Vancouver west for over 10 years and they've hoping that this will bring to final resolution this long arduous journey," he said.
Rouleau said the next step will be determining how the province should address the situation.
The fight was launched in 2010 by a group of parents who argued the conditions at Vancouver's École Rose des Vents lag far behind nearby English-speaking schools.
They say the B.C. government has violated their constitutional rights because the school was too small and had inadequate washrooms and library space.
The Supreme Court of Canada also granted the parents special costs to cover their legal expenses.