According to a new survey by the opinion research institute CBOS, 58 per cent of adults support the government's plan to teach religious education for just one hour per week - instead of the current two hours.
35 per cent are against it.
Education Minister Barbara Nowacka justifies the planned reduction on the grounds that children should not have more lessons in religion than in biology, chemistry or physics.
She presented a draft regulation last week.
According to this, only one lesson per week is planned for the elective subject of religion from the next school year.
The minister announced a dialogue with the Catholic Church, which is strongly in favour of the subject.
51 per cent still in favour of religious education
The survey also revealed that 51 per cent of Poles are in favour of religious education in schools.
On the other hand, 43 per cent were against the subject being offered. In 2008, 65 per cent were still in favour of the school subject - and 32 per cent against.
According to the Catholic Church, around 80 per cent of children and young people across the country take part in religious education.
The subject has only been back in Polish schools since 1990.
In 1961, the then communist rulers in Warsaw had banned all religious education in all educational institutions.