The European Commission Press Office has refused to recall over three million school calendars which make no reference to important Christian holidays including Christmas and Easter.
The educational calendars, printed at a cost of €5 million euro, cite all the important religious dates for Muslims, Hindus, Sikhs and Jews.
They also mention Chinese festivities and other public holidays including the EU-created 'Europe Day' on May 9.
EU spokesperson Frederic Vincent has apologised for the 'blunder', which he said was due to insufficient 'editorial policing'.
He also said the Commission will include Christian public holidays in the 2012 calendar. However this year's edition, which has already been delivered to 21,000 schools, will not be recalled.