A quick reply By Cathy-Dee

One of the best sites I have ever come across is
http://www.disciplinehelp.com/

I found a lot of very useful tips and ideas on dealing with some very difficult students. I do have some other ideas as well that worked for my two really difficult students at least some of the time that I'll share later.

Meanwhile your students are very fortunate to have you in their corner as it's very obvious you care about all of them including your difficult one.