Gordon Brown is to send his elder son to a non-denominational state school.
The Chancellor's decision contrasts sharply with Tony Blair's educational choices for his family - who went to selective church schools.
It will also be seen as a rebuke for Communities Secretary Ruth Kelly, who said last week that her son was being enrolled in a £15,000-a-year private school for help with learning difficulties.
According to the Mail on Sunday, Mr Brown and his wife Sarah have chosen a non-denominational primary school with nursery facilities in Westminster for their three-year-old son John.
A spokesman for the Chancellor - who will almost certainly succeed Tony Blair as Prime Minister later this year - refused to comment on the report.
However, he is understood to be angry that the information about his private life has been disclosed.
Mr Blair was heavily criticised in 1995 for sending eldest son Euan to the grant maintained Catholic London Oratory school in Fulham, south west London.
His other two sons and daughter have also attended faith schools.
