@Auntienumber8
I hope the ones that aren’t doing ok turn themselves around I remember them as sweet little five year olds. One of the ones doing well now had a huge shock. He got a job with his Uncle and then was sacked after six months, it shocked him. My goodness his poor Mum who had really tried her best was so embarrassed.
This is it.
I think kids in this group haven't been well prepared for the adult world. They've almost been cushioned from it and had something of free ride through school because there are relatively few ways to effectively deal with difficult kids.
Reality sets in when they realise they can't doss about at work without big consequences.
Your attitude and work ethic are really relevant here. So even if you aren't academic, trying hard and behaving are crucial life skills. The fact the OP has been called into school over behaviour is the massive red flag. There is something thats problematic and had an impact on others. Its not just something thats about academic performance - its anti-social behaviour.
If you fall into the wrong crowd and turn to weed (and potentially over drugs) it gets even harder because the peer pressure is different - but it doesn't change the expectations in the workplace.
If someone is percieved as being intimidating, that might be a real barrier to getting a job and holding a job down. Especially with weed in the mix.
Some kids in this situation do thrive after leaving school, but need a focus, to do something they are interested in and usually someone to invest time and attention into that as a mentor and to direct / channel them.
There are some lessons for both the OP and her son to learn from this. Outside school there is no drive and obligation to be inclusive of people who don't fit the mould as well as others. It suddenly falls back on the individual to get their own act together rather than sitting back and having a laugh.
Its the reality of the real world.
As it goes, I think the same thing happens to a lot of more academic kids, later on, but they have the advantage of a better education and the extra maturity that those few years give. If you leave school at 16 you have to grow up a lot faster and more abruptly than your peers and that in itself is a shock when they are still in party mode and you've got to be up and ready for work at 9am the next day and thats your lot.