Some could be parenting or other issues at home - but we’ve scrapped Sure Start & other services that help parents. This is though only one potential cause (not the cure-all that some posters are suggesting) - and it’s also the only one there is consistent action on (fines) yet the problem still exists.
Screens etc could be an issue to - see The Anxious Generation by Jonathan Haidt. Again, the government is taking action on this - but only part. They haven’t put pressure on councils to bring traffic under control so children can play outdoors. This is a generational change since my childhood & it doesn’t get the attention it deserves (probably because in general people are very resistant to any measures that restrict driving).
It could be due to being ND or mental health issues - child mental health has delays of several years near me for children to be seen (N.B. I’m not saying ND is the same as mental health issues, but the initial pathways for support might overlap).
It could be due to bullying or other sources of trauma (I have heard that COVID counts as an Adverse Childhood Experience for every child, so that it going to make it more likely that more children are at risk of this). There are plenty of threads on MN about families struggling with bullying.
It could be ill-health (again more children have this following COVID) yet long-COVID isn’t getting the attention it needs.
What all of these issues have in common is that there is no longer early intervention for children - even though we know it’s vital for children. Also, once you fall out of education the pathways to get back into it are limited - especially post-GCSE. Then - certainly judging by some comments on this thread - there’s a lack of knowledge about EBSA & its potential causes. There’s also a lack of political interest - the Government to be fair are thinking about it, but where is the interest from local politicians? My Council has a real issue with EHCPs not being issued on time, yet I’ve not noticed it being mentioned by any election candidates (although a few are very opposed to any measures restricting driving, which is probably against children’s interests).
If we want to solve EBSA, it needs early intervention & schools and families need support. That will cost money. If that money is not spent, then there’s a very heavy cost to those children and their families (& everyone else pays too via the benefit system).