Yes, VoiciLePort - I did say I thought it was a personality thing, although I think you would have to be exceptionally weak willed to stop working because some people think it's uncool, but nobody is teasing or bullying you about it. You wouldn't even survive in a grammar school if you could only work in an environment where everyone was an earnest workaholic. But yes, I think the ethos of a school can affect the easily led in particular.
There is something wrong with a school in which the ethos is that working hard and doing well academically is not to be encouraged! I've never been in a school with that attitude that does not have a bullying problem, tbh, although I can imagine it being more prevalent in a school where the children thought likely to do well academically have been removed entirely, as that is as clear a statement as you can possibly make that the children left behind are not really expected to achieve well academically, despite being told they have to study academic subjects... If you don't want people to behave like sheep and don't want the majority of children underperforming academically, then why would you send this message to the majority of children?