Capt. Airprox -
A bit of the thread I admit but if your "school" is selling a package offering any sort of license in the minimum time I would suggest that you are doing your students an injustice. All people learn at diferent rates and there is no way that you can guarantee to get everyone through in a set time unless you are prepared to cut corners.
Whenever I am asked by a casual enquirer or at the end of a trial lesson how long it will take to learn I point out that there is a minimum time but everyone learns at a different rate. Most people understand this and can relate it to their own and their friends experiences learning to drive a car.
This has a bearing on the low level turn discussion. So what if you have to take a few more sessions with them if at the end you turn out a more competent pilot. After all - if having been granted their ppl/nppl they then fly off to a different airfield on a cross country they can't refuse to follow a noise abatement procedure because there weren't any where they learnt to fly.
However, I doubt if it makes that much difference. The airfield at which I most often teach has noise abatement turns after take off on two of it's runways. As a result students are used to doing them right from their trial lesson and don't seem to take any longer to solo than they did before the procedures were introduced. Many airfields have different procedures to the standard rectangular circuit and it's just a thing they have to learn to live with.