The school has been fundraising for months and recently received a donation of more than $13,000 from Coles supermarkets in Mosman Park, Claremont, Subiaco and West Leederville.
Customers and staff at the outlets banded together to raise the funds.
MORE: Mosman Park fundraising for new playground
Coles state manager Mark O’Connor and Mosman Park store manager Nicola Fox visited the school to make the announcement and hand over a cheque to principal Alison Robb.
Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOWThe school hopes to upgrade its existing equipment into a nature-themed play area with climbing and balance structures, ropes and logs, as well as structures such as cubbies, seating and shelter areas.
Ms Robb said the playground would benefit not just students, but the community who will be able to enjoy the space outside school hours.