A Labour government would provide speaking lessons for children, with its leader saying an "inability to articulate your thoughts fluently is a key barrier to getting on and thriving in life".
Sir Keir Starmer made the pledge in an article in The Times, promising to put oracy at the centre of his party's plans to overhaul the education system.
"The ability to speak well and express yourself should be something that every child is entitled to and should master," he wrote.
"But the curriculum doesn't allow us to provide this. This is short-sighted. An inability to articulate your thoughts fluently is a key barrier to getting on and thriving in life.
"It's key to doing well in a job interview, persuading a business to give you a refund, telling your friend something awkward. Oracy is a skill that can and must be taught."
The article comes ahead of the Labour leader's launch of his fifth and final mission for government, due to take place in Kent later today.
Sir Keir will promise to break the "class ceiling" with a goal of half a million more children reaching their early learning targets by 2030 and with a target to recruit 6,500 more teachers into shortage subjects.