loadsofsmiles, you may notice that my comments about the school used the past tense. As I explained in my thread, I took a positive approach with the school. They're taking measures - including external assessment of DS's ability and an IEP - and I'm volunteering to help them in several ways. Relations with the school are very cordial.
Rude about teachers? Have a look at what one teacher above said about SEN. She seems to think that the definition of SEN is negative and unfair to SEN children (blissfully ignorant of the fact that it's a DCSF definition). How can you be teaching for 12 years and know neither what SEN nor G&T mean? There are some excellent teachers but it's strange how no teacher here admits that some fall far short of the ideal. Thousands are so incompetent they are worth immediate sacking (I know, I know, none of you like Chris Woodhead for saying things like that).
"Having said this there is no reason that during a whole numeracy session he couldn't have some work given to him that is challenging for him."
I agree. But many teachers think their work ends there. It doesn't. All this sideways stretching etc., is all very good but children like these need to be learning new things, moving forward, not just keeping the seats warm till the others catch up. Ah, but the 30 number does get in the way? Sure, and I'll have no complaint when teachers give a child who is two years ahead the same attention as they give one who is two years behind. Let's admit it, the way teacher/school performace is evaluated doesn't exactly encourage fair play across the board.
"I can assure you that the majority of teachers are not like this"
I'm sure a lot of teachers, like above and other examples on MN, think they are not like this. They refuse to accept when other teachers (even ones they haven't met) are talking through their hats. What chance a teacher admitting she doesn't cater adequately for the more intelligent children in her class? Or that she is prejudiced against children from "advantaged" homes?
I accept your point about the percentages not meriting your special training. However, I'd like to make two points. When you get a child with a banana allergy or some other rare SEN, aren't you required to know about their needs PDQ? Why is that not the case with gifted children i.e. you have to learn about it if you have one in your class?
Point two: It has been mentioned here before about one or two children in a lifetime. Somehow it seems to be taken for granted that there isn't a smooth progession in ability from your "normal" top 10% to these very highly able children. That's not how it works in real life.