"99.9 % of people involved with teaching in China do not have to worry about a "blacklist." It is usually career troublemakers and habitual contract breachers that wind up fretting.
However, in 2014 they will no longer publish the list so we will not know who nor how many teachers are on it (unless someone leaks us a copy as happened before). But we were also told there are now 9 reasons a teacher will be blacklisted whereas before there were only 7 ways to end up on the list. So pay attention and avoid these problem areas if you want to remain as a teacher in China and be able to renew your visa Z visa and FEC...

1) HABITUAL TARDINESS

2) MIDNIGHT RUN

3) THREATS OR VIOLENCE

4) ALCOHOL ABUSE

5) SEXUAL HARASSMENT OF TAs OR STAFF

6) MAKING PUBLIC ALLEGATIONS

7) SUBSTANCE ABUSE

8) THEFT

9) GENERAL MISCHIEF OR NON COMPLIANCE

Yes we agree, that last one is a bit vague and we were unable to get any clarification but we will keep trying. The big difference in 2014 is that if you get listed by SAFEA your visa will not be renewed when you go to apply - even from outside the country! Further a 1-3 year reentry ban may be placed on you at the discretion of the PSB."

Sourced from:

http://www.eslwatch.info/eslwatch-forum/china/178-foreign-teachers-black-list-by-safea-in-china.html#666

I wonder why certain regular posters have become very anti-China in recent years! It's possible that's because they have been placed on the blacklist on account of previous misbehavior in China; naturally enough they have chosen to keep their indiscretions secret!