A suburban secondary school in Melbourne has won an international green award.
Bentleigh Secondary College was named most sustainable educational institution at an event in London on Tuesday.
Other contenders were York University of Toronto, Washington University in Seattle and Abu Dhabi Indian School.
AAP reports the school has a windmill and solar panels. Water usage has been lowered from 14 million litres per year to one million litres and rainfall is used to irrigate the football ground.
Bentleigh is a state school with 850 pupils. Teacher Bill Thomas and two colleagues attended the event.
"All the students are asking `where do we go to next?'," he told AAP.