Mac doesn't offer courses but Mac does have a listing of online courses offered by other schools that are equivalent to Mac courses. I don't have the website of where it is but you could probably find it on the Mcmaster website by looking up letter of permission, that's what you have to get in order to take an online course. You could probably contact your academic advisor and they would have more information than me.
I'm going through the process of registering for an online course right now, but I don't even know what I'm supposed to be doing. lol