Why the kids are spending so much time behind the science block

I stole this from a local blog to post here.

“Behind one of the buildings at a school in Pleasantville is a small machine, a number of dustbins, some plastic pipes and a dedicated science teacher.
This believe it or not is where the school produces its own diesel fuel. The scheme is the brainchild of science teacher Sean Johnson. He has set up the equipment so that the school’s pupils can learn about re-cycling in a very practical manner.
The used cooking oil from the school’s kitchens is collected and the converted in to biodiesel. It is then used to fuel the buses that transport the children to and from the school.
The process to change the cooking oil into fuel is not only a simple one but very cost effective too. Innovation advisor, Vicent Von Néree, says it costs 25 céntimos a litre, 80 per cent less than at a petrol station.
Sean Johnson has for some time wanted to set up a unit within the school dedicated to sustainable development. The pupils learn about the need to find alternative fuels, the re-cycling of oil and clean energy. He admits to having used the diesel in his own car for several months and says there are many advantages, not just the savings.”