A CATHOLIC school has been left red-faced after it mistakenly allowed a "gay cure" seminar to be held on its campus.

The decision by St Columban's College at Caboolture in Queensland to allow controversial Christian group Miracle Christian Center to use its facilities was met with outrage by students and triggered an online protest.

The school said it did not realise what the meeting was about and has now withdrawn its permission.

Brisbane Catholic Education saId "Permission was given by the school, on the basis that the nature of the meeting would need to be in line with the college's Catholic Christian values."

Principal Ann Rebgetz said the group had deliberately withheld from the school the real nature of the event.

Miracle Christian Center president Dorian Ballard denied the group was homophobic and accused Brisbane Catholic Education of discrimination.

"We are not homophobic, many of us have come out of the homosexual lifestyle," he said.

"We are not afraid of homosexuals; we love them, we've ministered to them for years.

"This topic is always up for debate. It's great to hear a lot of different views in the broad spectrum and we have been silenced, we have been discriminated against."

However, he admitted that that his group didn't advise the school what it would be preaching about.

Former St Columban's College student Lexi Ryan, who organised the Facebook protest against the seminar, said the school had done the right thing.

Originally published as Catholic school bans gay 'cure' seminar