I relocated to a decent LA in order to home ed. It's not true that all children aren't monitored by the authorities. Mine will see the LA Ed Pysch on a termly basis, and I'm really happy about that.
My kid is one of those poor souls who just can't cope with mainstream, despite lots of adjustments & a 1:1. His intellect and diagnosis are don't tick the right boxes to get him a special school place. Private schools that cater for his SN's are upwards of 40K a year and only obtainable via tribunal - which would require me to remortgage in order to fund the legal fees, expert reports etc..
Had he stayed in the state system it was a cast iron guarantee he'd have ended up one of the 42% of state educated children who finish without the all-critical C grade in maths and english. Realistically that means an adult life mostly dependent on state benefits. Now I fully expect him to not only achieve that, but the grades he'll need to go onto further education or training and eventually gainful employment. It became a no-brainer.
I home ed as I wasn't prepared to sit back and watch my bright, but disabled child grow up to become a statistic. I've met too many parents in the same boat - SN state education in this country needs root and branch reform. Currently it is incredibly expensive and too many people are growing fat from failing the most vulnerable of all our children - state neglect in my eyes.
Sadly state education doesn't cater adequately for ALL children on a universal basis. Some kids are bullying victims, others have SN's or developmental needs not best suited to a factory environment, other kids have long term illnesses, fall pregnant, recover from accidents, spend time abroad etc, etc. Then take into account those children who are truly gifted, and those who are just late developers.
All children are not created equal but the state education system becomes more and more rigid in it's approach every year and fails to cater for more children at either end of the bell curve.
Many middle-class parents of clever children opt for the private sector as they feel the local state options are inadequate. These are often the gifted cohort of children. Home ed is just another option. The advent of the internet means that children can now do secondary school live online, and that access to information and meet ups are more accessible than they have ever been.
My own anecdotal experience shows me that home ed parents tend to be of the sub-group that really, really care about their children's education and that put a helluva lot of effort into it.
I'm sure the lazy, neglectful parent of urban myth exists but those aren't the ones I'm meeting at the lively and vibrant local homeschool groups we attend. I noticed however that when DS was at school we tended to befriend those families who cared whether they did their homework or not, so my anecdotal viewpoint might be a very narrow one. La's have a part to play here, my old one was incompetent, my current one seems superb and will be able to help me ensure my child fulfils his potential as they see education as a true partnership whether the child is educated by Mum or at school.