To my level of knowledge, that decision was focused on whether or not the site conditions for Rose-des-vents were equivalent to the site conditions for English-language schools and whether the elementary school and the board were given equal access to high-quality properties. It was decided that efforts should be made by the province and others to make sure that they are provided schools that are equivalent to English-language counterparts.
On May 7th, 2019. See this statement in context.