What motivates community?

From my "Complexities" posting I wanted to flesh out some ideas after observing projects at Wara...on the question:
What motivates community organisations/corporations to engage with school sites and students?

* The novelty factor in marketing - This is based on response "Wow kids did that?" which for organisations or the corporate world can be an appealing angle to work with when promoting a product or service. eg pamphlets for Gracemere Saleyards

* Social conscience - There is probably a better tag or label for this idea but it is based on the fact that community groups and some businesses have an agenda to build or contribute to the social fabric of community and working with youth helps them achieve this.

* Cost factor - Basically having students undertake a project as a learning experience can be a lot cheaper than getting the professionals to do it. Quality control needs to be considered and this opens up ethical questions about paying students or the school. (I think this is pretty much unchartered territory in Qld, but that hasn't stopped us for venturing into the minefield eg Mt Morgan Museum)

* Education agenda - Many community organisations and government departments want to educate young people about their cause. They become pretty willing partners if this is the case. The tough stuff is helping them shift their paradigm around how its done. eg The Commonwealth Games phone call Chris had, highlights just how hard it can be.

* Meets a market niche - Basically this is where the teacher and kids have hit on an idea that is needed in the market place and creatively position themselves to deliver it. eg the potential of the recycling bag stand and wine from Stawell. Still waiting for the sample!!!

Of course in most cases its a combination of the above and there are sure to be motivators that I haven't identified. I guess the intriguing thing from a research perspective would be to get some anecdotal stuff from the horses mouth.