First, I am sorry that your psyc is such a waste of time. Everything that you have described is pretty typical ADHD behavior - or at least behavior that I have seen mentioned on the ADHD website -
http://www.medhelp.org/forums/ADD---ADHD/show/175 a lot. And you might also want to continue this discussion over there where I am also the CL.
Briefly, cause this could take pages. There is a lot that can be done. You just need the info.
What I am most curious about is why aren't the meds making a difference? What is he on and what dose is he on? Also, how long has he been on the meds. His behavior should change (at least at school).
And meds are only part of the answer. As you are finding out. I can literally explain to you why ADHD is causing him to do all of the things you have listed. And if you want to post over on the ADHD forum with specific questions - I will be glad to do so.
My main suggestion is get the book, "The ADD/ ADHD Answer book," by Susan Ashley. Its about 10 bucks on Amazon. It will give you how to help him at home. How the school can work with him. How to effectively try and change his behavior. And most importantly, it will also give you a feeling for how ADHD effects kids. That apparently is something your docs have not bothered to tell you - and from the questions I get over on the ADHD forum - this happens a lot.
I can also recommend other web sites that have good suggestions on how to help/work with kids with ADHD.
By the way, believe it or not, kids with ADHD have 4 times more problems with "wetting" accidents then other kids. Basically, they just ignore the signs until its to late and then pee where ever they are. Its about getting them on a schedule. And kids with ADHD really need to be on a definite schedule - particularly at this age.