All of the above! Uni, colleges, high schools, libraries, etc etc. Usually one or two day courses, though I've got some term-long courses coming up soon too. Very fun stuff =D
Workshops, yeah - gotta keep it all hands-on and engaging! I get contracted through a couple of colleges (Academy of Information Technology, Coder Factory Academy), who then make sure I have the facilities I need and send me around Sydney for workshops as well.
Really lucky in that I still get to coordinate & plan out my own courses - lots of freedom and choice with what I can do! =D Will have to attach my courses to the NSW high school curriculum soon too, so that'll be exciting!