The Extended Schools Initiative comes from the UK government:
"An extended school works with the local authority and other partners to offer access to a range of services and activities which support and motivate children and young people to achieve their full potential." From Extended Schools.
There is a great potential for churches to work together in a town to be one of those partners offering services. I found examples of Youth for Christ getting involved in Bath and Warwickshire
The Consultative Group on Ministry Among Children has a page of resources too.
The The Extended Schools Initiative page mentioned above has links to lots of resources, which I've yet to explore. Interesting stuff....
We're just beginning to think about it in our church.