I don't know where you are but NSW have as association for gifted and talented children (just google it) which offers advice and support for parents as well as advocacy and runs their own programs in the afternoon and on weekends.

I can imagine that each state would have a similar organisation.

I think that you have to be proactive in the education of your DS and not just rely on the school to provide a special program.

To play the devil's advocate for a moment - why should your kid get special treatment at school and get more resources spent on them than others? Lets imagine that there was a kid there who was brilliant at basket ball - should the school employ a special coach for them and write a special sports curriculum so that they can oneday play for the NRL. No, it just wouldn't happen, the parents would be the ones paying for speical lessons and taking the child all over town to play games and buying uniforms and paying for camps etc - noone would be expecting the sports curriculum to be rewritten just becuase little Susie didn't like playing hockey.

Schools have very limited resources and I personally think that while there are many truly wonderful and dedicated teachers in our schools in Australia if you want more than they are able to offer then you have to go out and find it for yourself. Please also try to remember that if they are setting different homework for kids then it is twice as much work the the teacher. They have to come up with two entire sets - one for the class and one for your DS and then there is also the marking at the other end - it is much easier to mark 20 the same.

Maybe try to make the books that you have bought more fun - if he was inspired by them he would be sitting down and doing them himself without being conjoled into it - or give them to his teacher and ask them to give them to him. That way he is doing more work, he thinks that it is homework, you can mark it for him so as not to increase the work the the teacher and everyone seems to win.