Thanks for your comments, I guess I should have put a lot more detail in the original post.
He has lots of problems with anger management, mood swings, not following instructions and is very immature both socially and emotionally.
He was a very manageable baby and young toddler who then changed into a child who will hardly ever comply with instructions and has developed many, many techniques to avoid doing so. If pressed though he will go into complete meltdown and no amount of reasoning, bargaining, time-outs or anything else are effective.
Reward charts have been used at home, nursery school and in reception but tend to backfire and actually exacerbate bad behaviour as if he is trying to punish us for manipulating him.
He also really struggles when interacting with other children and often lashes out.
I know he is still very young, but this behaviour has been exhibiting itself for a good two years and as yet shows absolutely no sign of improvement as he gets older.
We have worked closely with nursery and school, I have read soooooo many books on behavioral techniques and implemented them, i think, as least as well as the next parent, but still to no effect.
The reason i thought school might 'knock him into shape' was because I thought it must be our lack of parenting skills (that both dh & I have strived to improve) that was at the root, and I was hoping the professionals would do a better job. Sadly, their attempts are meeting with the same amount of success as mine- ie. none!
The more I read about it the more I think he has some neurological issue at the root of all this.
What i really wanted to know was quite how to get the best support from school for him with these issues.