The impromptu singalong followed students designing and selling diversity themed t-shirts and badges for an inclusion day to raise $500 for the Find Your Voice All Abilities Choir.

School captain Hannah Greer selected a rainbow design for a subtle OK symbol on the t-shirts, which she said represented "all different people".

"Everyone is not the same and we can include them no matter what they look like or their ability," Hannah said of the shirts' message.

The school raised $500 for the choir and choir member Kimberly Dempsey said it would help transport the 170-strong group to upcoming performances in Melbourne and in the south-west.

"I reckon they did an amazing job and they're teaching kids their age and younger that everyone should feel welcome. Maybe they won't get bullied and if they see someone get bullied, maybe they can help the kids out," Ms Dempsey said.

Years Five-Six teacher Michelle Bartlett said the project helped students become mindful of different abilities, races and religions.

"When they get into high school and out into the local community they have that knowledge of being inclusive," Ms Bartlett said.

The school also walked the talk, Ms Bartlett said, and taught students to invite anyone feeling left out and sitting on a 'buddy bench' to play.

School youth mentor James Chapman said the school celebrated having students from "all walks of life" with different abilities.

"This school is a real melting pot, particularly of socioeconomic status, the kids beautifully don't see it. There is no judgement," he said.

Meanwhile, the state government announced the all-abilities choir as a finalist for the volunteering and creating inclusive communities categories of the 2019 Victorian Disability Awards.

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