I agree totally with what Cubdriva says....BUT if you are already employed...ie. have a flight school willing to employ you as a CFI, and tells you to go out and get that CFI, I have no problem going to ATP or Shebles or any other accell. course to get that done. That being said, the school hiring knows that you are going off for a few weeks, and you are NOT going to return a god CFI. IMO it is another learning ticket, you must know a ton to get it, but you learn more when you start teaching others how to fly.
IMO.