Information on Langlands Park school in Port Glasgow?

Langlands Park School was owned by The Church of Scotland I think. It was down behind Port Glasgow cemetary, beside Sunnybank House. We always knew it as the bad girls school, I think it was wayward teenage girls who lived there. I remember being told years ago that there was an orphanage down there, but I'm not sure if it was Langlands Park or Sunnybank. I remember going to St. Martins church when I was little, and the girls from Langlands Park would be there. Don't think the building is there anymore, or if it is don't know what it is used for.