Mr Rudd used a visit to Campbelltown last week to support Labor's candidate for Macarthur, Nick Bleasdale's, opposition to the proposal.

"We are concerned about the adequacy of local infrastructure to support such a large school," Mr Rudd said.

Mr Rudd said he opposed the application on "planning grounds."

When told by a reporter Mr Bleasdale opposed the application on planning grounds before seeing the plans Mr Rudd stood firm in his support for his candidate.

"I support what Nick has said about the school," Mr Rudd replied.

Mr Bleasdale stepped in when Mr Rudd was asked if he would support other school applications in the area.

Mr Bleasdale said he would make decisions on a "case-by-case basis."

Mr Rudd is not the first high-profile politician to enter the debate.

Former One Nation leader and Queensland Senate candidate Pauline Hanson visited Camden to protest against what she thought was a mosque.

Macarthur MP Pat Farmer attended a protest meeting against the application but at the time wouldn't speak to the Advertiser to reveal his position and State MP Geoff Corrigan welcomed the plan.

Camden Mayor Chris Patterson said council would make a decision early in the new year based on reports compiled by state government bodies and the submissions made to council.

"On this issue everyone is entitled to their opinion, I respect that but it's not always helpful to the process to have people who clearly know nothing about the development application comment on the application," he said.

"If our federal politicians and candidates are so concerned about this issue I look forward to reading their submissions."

So far 3360 submissions have been made to council, only 13 were in support of the plan.

Nine petitions each with around 400 signatures were also received by council.