QA or testing? To some, there is a significant difference. To others, the terms are interchangeable.
Before you start worrying about "good" classes, you should probably start looking for "any" classes.
Now, assuming you're talking about testing....
If you go to your favorite browser of choice, point it at Google...and then enter "software testing training Toronto" (without the quotation marks), you'll find a number of potential candidates to sift through. I imagine the same would hold true if you entered "software qa training Toronto" (or some variant thereof.)
Once you find "some", then you can start narrowing things down to "good". Piece o' cake.