IM(VH)O he's a bright boy. All his teachers consider him bright, as well as polite, friendly, well behaved etc. He's a bit on the quiet side, but also has "positive friendships". Academically, he's always been either at or very slightly above the national targets.
IMO the targets aren't that stretching for a bright boy with loads of support at home (i.e none of the disadvantages many children have to deal with) and I think he should do better. His junior school and now his secondary school (yr7) seem quite happy to let him coast. They say they know he could do better if he made more effort, but he's doing what they need him to do and he's not causing anyone any trouble, so they don't seem too bothered about pushing him. i.e they say he should work harder, but they don't seem to be doing anything to make that happen.
I lay down the law about quality of homework and his reports acknowledge that his homework is good, but that he needs to pay more attention in class and take more care over classwork. AIBU to think they need to do more than say it? I find it frustrating because I can support/nag at home, but it's hard for me to do that while he's in school.