Reading at our school seems good. They jump levels, don't mind children reading from home/library etc. from reception, as long as they read regularly. But KS1 sats results seems to be good.
In Ks1, my ds was sent to year or 2 year groups above for English and maths.
But it didn't really work out, since it wasn't constant, he can't go today because we are doing this, or they are doing this today, etc., ended up stopping and starting. Anyways, the work in higher year groups weren't challenging enough anyway.
Since ks2, it all went dead. They can't send him to higher year groups due to time tabling issues, but not really doing anything in his year group to extend either.
I hope your school isn't like this, but we gave up completely at school to do something about it.
How is your school doing? If the school get good results overall, and if there are other able children, I think there's hope. But if the school is generally low achieving like my ds' , they put more effort in to bringing up whole year, rather then try to extend one outelier children.
I stopped getting stressed up about what he does at school, he enjoys school, that's what's important for us. Luckily, he doesn't get bored by school work at all, he always to seems to find the way to entertain himself some how. And I give him access to higher level of learning at home, without a limit.