The illustrations are on display at the Mundaring Arts Centre until Sunday.
Centre director Jenny Haynes said more than 450 primary students participated in the environmental art project.
The theme for this year involved exploration of the impact of bushfire on native flora and fauna, with a view to solutions for recovery.
“Each class approached the topic differently with some schools undertaking cultural visits, eco tours and research,” Ms Haynes said.
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READ NOWA record 15 winners will paint their designs as large-scale banners for display at the Nichol Street Rose Gardens in November.
A further 34 highly commended students received prize bags. The project is a partnership between the arts centre, local schools, Shire of Mundaring Shire, Bendigo Bank and Department of Culture and the Arts.