Outraged parents have set up an online petition and Facebook page titled Save Our Play Space has gained almost 240 likes in support of the campaign to keep the carpark off the oval.
An Education Department spokeswoman said with the new $1.3 million administration block going on the existing carpark, it was necessary to find another site for parking bays.
She said the department found an area of 845sqm on the oval for the 21 staff and visitor bays, and one disabled bay, to be the most appropriate spot.
Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOWThe oval will be reduced from 6890sq m to 6045sq m.
"The edge of the school oval has direct access to West Road through an existing crossover, which is why the oval is the most suitable location," the spokeswoman said. "The carpark has been designed to minimise any impact on play space.
Parent Kylie Turner said green strips of material were tied to the oval fence as part of the campaign to save the oval. Parents took to the Facebook page to air their grievances about the development.
"This play space is important for our children and should not be taken away for parking," one commented. "That is appalling. So much for promoting riding/walking/bussing to school and promoting sports and kids" activities, another wrote.
The department spokeswoman said designs for the development were made public and accessible to the community. "During the design phase, a presentation of the designs for the new building and car park was made to the school council," she said.
"Information was also provided at school assemblies and included newsletters (and) plans including the new carpark location were also displayed at the school. Feedback was invited but none provided."
She said since construction started, the department had received four letters against the develop- ment of the carpark and a department representative had met with three of these parents to discuss the matter.
Bassendean MLA Dave Kelly sent a letter to Education Minister Peter Collier asking for an alternative proposal to be actioned immediately.