Helensburgh is about 45 mins from Glasgow Queen street by train, upper west end is nice.
Lomond school is from 3_18, the nursery operates on some forest school principles, the new headmistress has been there about 1 year, generally good results but is non selective. So results not as good as some private schools
Hermitage primary would be catchment school and it is pretty good, hermitage academy the stratre secondary takes pupils from as 25 miles arrochar, less kilcreggan etc, it has about 1000 pupils generally thought of as a definitely above average school though new national 4&5 and higher results last year were not so good three is local debate as to why my dad is young so not so sure about senior schools, nearest catholic secondary is in Dumbarton.
Helensburgh generally has low crime rate and is a safe place, has a co.op and tesco metro in town centre plus 3 independent butchers a fish shop green grocers 2 decent though not cheap tyoyshops several good restaurants La barca won Mediterranean restaurant of Scotland last year, if sailing kayaking is your thing plenty of opportunity, loch Lomond is 10-15 minutes drive
Downsides, it is best coast of Scotland, it rains!!!, also midges in summer, there is no nightlife or cinema, though the tower has some films and cultures stuff,
There is boots and whsmith Gregg's but most shops are independent, there is a large wait rose on outskirts of town.
Regarding anti social behaviour there ius a bit around pubs at weekends but better than most places hardly likely to affect you if planning to live in upper west
Hope that helps