Teachers are banning schoolkids from having best pals — so they don't get upset by fall-outs.
Instead, the primary pupils are being encouraged to play in large groups.
Educational psychologist Gaynor Sbuttoni said the policy has been used at schools in Kingston, South West London, and Surrey.
She added: "I have noticed that teachers tell children they shouldn't have a best friend and that everyone should play together.
"They are doing it because they want to save the child the pain of splitting up from their best friend. But it is natural for some children to want a best friend. If they break up, they have to feel the pain because they're learning to deal with it."
Russell Hobby, of the National Association of Head Teachers, confirmed some schools were adopting best-friend bans.