re: Liability of teaching a class in my shop - Canada

my first thought was the vultures that “trip”. those that set out with the idea to sue or thieves casing whats worth stealing. (just because Im paranoid doesnt mean they are not out to get you lol)
Have you considered instructional videos and kits sold online. It would take less of your time and spread your reach much further than the local community where by definition your market is smaller. multiple courses online for a fee. A lot of people like to have that resource they can keep referring back to. it could generate income without much time other than the upfront production