A quote from The Daily Telegraph, 23 June 2008

Thousands of primary pupils were prevented from making Father's Day cards at school for fear of embarrassing classmates who live with single mothers and lesbians.

The politically correct policy was quietly adopted at schools "in the interests of sensitivity" over the growing number of lone-parent and same-sex households. It only emerged after a large number of fathers failed to receive their traditional cards and handmade gifts. […] [L]ocal authorities said teachers need to react to "the changing pattern of family life".