At it since 2006, Wellington College in the UK, has a comprehensive outline of their positive education guided by their 3 key principles:
Firstly, it is appreciative. This means that the process starts by looking for what we do well with a view to spreading it to all areas of College life. Secondly, it is grass-roots; it is not imposed from the top-down, but comes from the whole community. Finally, it is sustainable; this is not a process of forced, rapid change: we will take our time and get it right.
They generously share a 4 years strengths plan:
In fact if you click the links on their left hand side control panel you can access pretty much their entire curriculum. Positive education in box.