It's unfortunate that not all instructors stay up-to-date with the latest research and media. Because instructors have a renewal period, and then techs also have a renewal period--if everything came from formal materials published for the curriculum (accounting for update delays there) we'd be looking at at up to over 5 years' delay in the propagation of new information through formal means alone. In my opinion, that's unacceptable..and it's one way in which the Canadian curriculum and distribution needs to be updated. However, there seems to be little interest and even less funding so it's really on those individual instructors (and subsequently, their students) in the end. If an instructor doesn't have a passion for CPS, they end up providing out-of-date and sub-standard training.
On the flip side--being a little too progressive may mean providing some information that has yet to be sufficiently proven, reviewed, or substantiated. It's possible that some instructors are not comfortable running that risk.
-Nicole.