Many of the schools I've worked in have been in deprived communities characterised by pit towns, inner city, and (originally council) estates with high levels of social housing.
It is common to have multi-generational lack of engagement and valuing of education and not seeing it as a way to broaden potential opportunities. Pride can manifest as an inverse snobbery and fear of change. There can also be mistrust of authority and public authorities.
Family histories of struggling with undiagnosed learning difficulties are common. Families with poor awareness of them are less likely to recognise them and seek early interventions and diagnosis. If they do seek diagnosis, they're more likely to get stuck in lengthy waiting lists and unable to short cut a few years by going private or travelling for RTC options. In many areas, dyslexia diagnosis is only avaliable to those with spare £££ for private assessments.
Traditionally a reasonable living could be made with practical skills rather than academic qualifications, but that's become harder in the last 50 years, and some communities haven't shifted their mindset to adapt to changes in the wider world.
The current education system policy doesn't serve communities with significant proportions of these traits well. Focus on dry, abstract academia and unattainable assessment targets (SATs, GCSEs, re-sits) sucks joy out from learning. Access to functional skills and vocational courses has been dimimished by curriculum reform and funding cuts. Schools and their staff do their best, but they are curtailed by funding, resources and engagement.
We're struggling with a significant minority of students who do not engage with basic expectations and are enabled by parents until issues hit a crisis point and they are completely beyond control. Their social skills are poor, baseline knowledge and skills are weak and then fall into cycles of falling further and further behind. They thrive on petty drama after petty drama and escalate minor issues because they struggle with conforming to the expectations that keep schools functioning safely to the benefit of 1000+ people.
By 16, they lack the foundations they need to continue education or be employable. Sometimes maturity can kick in later, but it creates a very vulnerable situation.
It's certainly not all students from this kind of background, most of our young people are fabulous, and they deserve better than constant disruption from 10-20% of their peers.