My parents could afford to send us to private school (also Glasgow area) but chose not to, because in their opinion, it would make us no smarter and the money is better spent on other things .
I know people who live in small flats and do weekend caravan holidays (rather than 2 weeks abroad and nice houses with gardens) just so they can send their child to a private school. Its ridiculous.
Then there's the cost of uniforms, cost of trips to south africa or wherever as part of their 'education', after school activities and travel because there won't be a free school bus and private schools are rarely close by.
We could probably afford to send DD to private school and we did look into it. But its £10,000 a term minimum, going up each year. We'd be paying about £30,000 a year. FFS, there are so many things I could do with that money that would be of greater benefit to my child.
It would be cheaper long term to move to an area with a top ranked state school.
I had a friend who went to a private school. She dropped out of university before finally training as a teacher. Her brother also went to private school but hated it due to bullying and they sent him to a state school for his last school years. The youngest went to a state school and he's the one who earns the most (and didn't go to university).
I also know a family who cut back on holidays, nice house, trips out and ate own brand foods so their son could go to a private school. He's now in prison.