I often come on to threads like this to promote Shawlands Academy: a school with a very mixed demographic yet one which encourages all its young people, whether they be academic, not so academic, sporty, musical, artistic - or any combination of those.
Ds was both academic and sporty - played rugby (wonders which rugby club @Puffalicious 's dses go to 
) both at school and at the local rugby club and was in all the top sets at school. He's just graduated in PIR from Aberdeen Uni and has got a job in his fairly niche field.
Shawlands itself has lovely areas and a vibrant shopping area (especially for coffees, cakes and brunches 
), plus there is Newlands and Pollokshields - all of which have good transport links. I'll admit to ds being a placing request: we live in a part of Pollokshields where he should really have gone to Bellahouston (but they weren't a School of Rugby).
I went to Bearsden Academy (albeit a long time ago 
) and I'd say Shawlands is a better school than Bearsden was, as Bearsden only really cared about you if you were clever (as I was, so I was fine ). My mum (an English teacher - who started at Bearsden Academy with me - her a probationer, me an S1 - but latterly at Clydebank High) helped tutor friends' dcs who weren't being "allowed" to sit Higher English at Bearsden/Douglas (because the school thought they'd fail), so had to be presented privately - and she helped them get Bs 
The other thing that schools like Shawlands try to engender is self-sufficiency (hence the holistic approach with sport/art/music). The pupils aren't encouraged to be tutored and have a lower drop-out rate at Uni compared to those at more "hot-housed" schools.
Essentially, I'd agree with previous posters not to discount schools within Glasgow. I've also heard good reports of Hyndland (although the West End is a lot more expensive than Pollokshields, Shawlands, Newslands, Strathbungo). And I know via the rugby club that kids have gone on to good things from Kings Park, Hill Park, Lourdes....