Dedicated Quakers Hill High School students helped to mark the school's 20th anniversary — with paint.
Gifted and talented students in years 7 to 10 created a six-metre by two-metre mural titled Inclusion to emphasise the school's diversity, taking style cues from the work of New York street graffiti artist Keith Haring.
The bright mural of 20 painted figures was hung above the school hall.
Year 9 student Kavya Mathur, 14, painted panels with colourful landmarks including the Eiffel Tower and a green-and blue world map with a camera floating in the centre.
"Our teachers Ms Spring and Mr Wong told us to pick up a multicultural theme but still make it quite abstract," she said.
"I chose landmarks because monuments would symbolise each person's background. There's the Eiffel Tower, Taj Mahal, Great Wall of China, some parts of Greece, the Opera House.
"They're not the original colours but they're bright."
As Andrea Deller, 14, completed a panel which referenced Martin Luther King Jnr's 'I Have A Dream' speech. It was the 50th anniversary of the March on Washington rally attended by 200,000 people.
"That's cool," she said.
"Me and my friends also designed a gradient [colour] one. We really liked the mixture of the orange, blues and yellows and we added a bit of pink and red to spice it up a bit."
Teachers Ivan Wong and Phillipa Spring gave guidance to the students involved.
References to history, friendship, school subjects and activities, the changing landscape around the school and the Darug people's totem animal, the goanna, are found in the work.
Ms Spring said the students involved in carving, painting and weather proofing the mural were generous with their time.
"We've been really impressed with how dedicated they were to the task," she said.