Glendalegoon and Whopity - totally agree with those sentiments. I should confess - I am a flying instructor and I work in a club set-up, not at a commercial school. To me going the extra mile (assigning extra books is a good example) is really important if it makes the difference between folk who are as safe as they can be and are having as much fun as they can on the one hand, and on the other hand people who see getting the licence as the end point not the beginning.
Thanks everybody for helping me be confident that I'm right to think the way I do