Kandinsky-inspired swirls, animals, and abstract flowers featured in the works that fetched more than $2300 at Widemere Public School's art auction.
Pupils from kindergarten to year 6 painted the artworks in class groups for the event held every second year at the Greystanes school.
The two kindergarten artworks attracted the highest bids. High-colour abstract Bubbles Over a Rainbow sold for $500 and a tree of buttons for $550.
Welcome to the Jungle, painted by class 3/4 J, was inspired by their teacher's tales of growing up in Zimbabwe and attracted a winning bid of $300.
Colourful Owl painted by years 1 and 2 pupils was inspired by Kandinsky's concentric circles, and looked at the correlation between music, emotion and colour.
"The owl is a symbol of our love of learning," teacher Mrs Cook said in an artists' statement read at auction.
Principal Michele Saunders said the funds would be used to build a new covered outdoor learning area for pupils in time for summer.
The auction followed open classrooms held for parents to celebrate Education Week.
"It is wonderful to see our students being challenged in classrooms," Mrs Saunders said.
"Teaching has changed so much. It's not just about teaching subjects like reading and writing, the old arithmetic, science and history anymore. We must now prepare children for a diversity of futures."