Freddie told the prince he had written to him for his help getting the message out that it was OK for people to express their emotions.
The royal then greeted school staff before sitting down and sharing “dad jokes” with pupils for a mental health podcast.
“I’ve been asked to produce a dad joke, so I’m kind of trying to channel Jack Whitehall, most of his jokes are pretty dad-like,” the prince said.
He then drew laughs by telling daughter Princess Charlotte’s favourite gag, a knock knock joke involving an interrupting cow.
