It looks like UHS has some night classes to learn Mandarin.
http://www.yrdsb.edu.on.ca/page.cfm?id=CC0000073

I've taken an intro course at Seneca a few years ago, and I know some basics. I could continue there, but it's a longer commute, and I'd like something closer.

I am a native Cantonese speaker and already can read/write Chinese, so that isn't a huge issue.

Does anyone have some experience with the courses at that the YRDSB offers? Thanks.