The Gaels are also on the mainland of Nova Scotia, mostly in the Eastern part of the province. I don't know the significance of "Lowland Scots" in Nova Scotia, but I think it should be significant. But Scottish Gaelic is very important in Nova Scotia. They're teaching it in public schools (elementary, junior and senior high). They also have a Gaelic History course taught at some high schools. And at least four post-secondary institutions offer Scottish Gaelic. One of which (St F.X.)also teaches Irish Gaelic. They have other Gaelic related programs as well.

I'm not 100% sure of this, but I think they have an Extend Core /
Immersion program where students who have sufficient knowledge of
the language can take courses in Gaelic. I know they do for French.

It's mostly in the Halifax-Metro area (because it's the capital),
Pictou and Antigonish Counties, and Cape Breton island (because those
are the Gaelic regions). Antigonish and Cape Breton have most of their
major road signs both in English and Gaelic.

They have a government run "Office Of Gaelic Affairs" with three locations in Antigonish, Mabou and Halifax.