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...
The Father's Day card ban has been introduced by schools in Glasgow, Edinburgh, East Renfrewshire, Dumfries and Galloway and Clackmannshire.
Tina Woolnough, 45, whose son Felix attends Edinburgh's Blackhall primary school, said several teachers there had not allowed children to make Father's Day cards this year...
The Father's Day edict follows a series of other politically correct measures introduced in primary schools, including the removal of Christian references from festive greetings cards.
Matt O'Connor, founder of campaign group Fathers For Justice, said: "I'm astonished at this. It totally undermines the role and significance of fathers whether they are still with the child's mother or not.
"It also sends out a troubling message to young boys that fathers aren't important."