Raynes Park School is already living up to its reputation as the greenest school in south-west London as the nominations for the Green Guardian Awards 2008 opened last week.
Merton will be joining a campaign to clean up London, with volunteers and council officers spending next week removing graffiti and picking litter up from the borough's streets.
If everyone in Merton used energy meters, households could save £3.4million a year on energy
and enough CO2 to fill 114 Royal Albert Halls, according to the Energy Saving Trust.