A school suspended two pupils and provided extra lessons on diversity after it emerged children had made monkey noises and performed Nazi salutes at black and Asian children, the M.E.N. has learned.
A school investigation also uncovered a pupils' Snapchat group titled 'The Nazi Party' said to have been used to share disturbing content.
The headteacher at Saddleworth School near Oldham, Mike Sanderson, told the M.E.N: "Discrimination and prejudice have no place at Saddleworth School and any behaviour which falls short of our expectations will be dealt with very seriously."