Exactly, cazboldy. I have taught many girls who have either got pregnant whilst still at school, or very shortly afterwards. I don't know about other areas of UK, but in this area it is certainly common for a fairly large percentage of the population to be parents by 16/17.
I get girls coming up to me in the local Lidl saying, 'Hi miss,' and proudly showing me their new babies/toddlers. They love being 'Mum' and have a good support network, generally, of friends who are all in the same situation. None of them have shown any interest in leaving their babies to go back to college - 'Nah - I hated school' is the usual answer if you ask. It's not uncommon to meet a girl of 20 with 4 pre-schoolers. They do not want to leave their children - they are happy being at home, gossiping with their mates, drinking coffee, playing on their phones, whilst all the babies/toddlers play together.
This is not meant as a criticism of them. This is what they wanted out of life - most of the babies were/are happily planned. Occasionally I'm told they 'might get a part time job once the kids are at school' - and lots pick up 16 hrs a week as a care assistant in one of the nursing homes or on a supermarket checkout once their DCs are older. This suits them fine.
Whilst not necessarily condoning their choices I can understand it. Other people might think that forcing them into education/training til 18 will give them other choices, but the reality is that it probably won't. Many of them were serial truants, seriously disaffected by 13/14, struggling with family issues and poor attendance records. What is the govt expecting to achieve for pupils such as this between 16 - 18? If they want to tackle these kinds of issues then they need to start much earlier.
To be frank, in this area, even a good level of education is not going to guarantee you any kind of job. Unemployment is high, even for skilled and professional workers. Whilst practical apprenticeships sound a good idea I know time served workers in their 30s and 40s, skilled men who are builders, plumbers, plasterers, etc who cannot find enough work to support them.