I used to work at Hermitage Academy in the early noughties. It was better then but the thing to be aware of is that the postcode may cause problems for your child.
Many of our pupils struggled to get onto training courses because many training opportunities in West Dunbartonshire are not available to Helensburgh area. In addition, Argyll and Bute training opportunities tend to be Oban based.
For further and higher education, you need to travel into Glasgow or Clydebank. For apprenticeships, there are too few in the Helensburgh area and again you need to travel.
That's one of the reasons Hermitage has a high number of people going into FE and HE because there is nothing else on their doorstep - doesn't mean FE/HE is the right option for them, but that its easier just to jump on the train than it is to get an apprenticeship on your doorstep.
Even for several out of school activities you also need to live in West Dunbartonshire, Glasgow or Oban. Its very postcode based.
And for particular support if you were having difficulties, again you couldn't always access the support on your doorstep, the pupil had to travel to Oban.
There is very little for teens to do in Helensburgh either.