I have been very lucky to have worked at some good schools. But then again these were government schools in small towns that had to treat their foriegn teachers well in order to get them to renew. These schools also bring their teachers on Z visas.

I disagree. Govt schools in China are also out to maximize profit these days.

When they can't get foreign teachers holding Z visas, some of them will take foreign teachers without Z visas. Now, the situation was like that visa-wise before July 1. I suspect it won't be like that these days, but one can't be absolutely certain of that!

Haven't you seen public high schools in China with neon lights on their buildings advertising themselves to passers-by after dark?