I attended the QGIS training in the UVic Digital Scholarship Commons (DSC).  Like all the trainings I have been exposed to from the DSC, it was well organized and worthwhile. The facilitator had a prepared task for us to run through and then was there to help problem-solve when we ran into trouble.  I’ll admit I did not get too far in terms of building my map.  However, beyond the learnings about QGIS, I like the teaching model of explore and problem-solve with a guide on the side.  I think this might be challenging in a class of 25, but I still think it might be worth a try. Or maybe the Digital Scholarship Commons might be open to a partnership with a high school?