I recieved a certification in strucual and thermal, which is put on by PTC.
I found the course materal to be insuficient, the only thing that added value to this weeks worth of training was the fact that the instructor was willing to go beyond the PTC ciriculem (which he was not required to do).
The effectiveness of the course is determined by the generousity of the presenter.
So bottom line...if someoneelse is paying for it, go for it; but if your footing the bill, your better off searching the internet or purchasing books form SDC.