The Norfolk based school revealed the colourful arrangement of messages the Duchess will be able to read.
Taking to Twitter, Sheringham Community Primary School and Nursery tweeted: “Our children enjoyed the @OakNational Academy assembly with HRH Duchess of Cambridge on Friday.
“She talked about different ways of kindness & recognising the benefits of kindness to others
@KensigntonRoyal #SheringhamCommunityPrimarySchoolandNurserySCPSNhomelearning #kindness”
The Duchess broke away from the lockdown norm and conducted her first royal engagement in person last Thursday.
The royal mum of three visited Fakenham Garden Centre, a short distance from her Amner home in Norfolk, to show her support for local businesses.
Kate addressed students at Oak National Academy in the weekly assembly via an online classroom that have been created to assist teachers and parents during lockdown.
Speaking to the pupils, The Duchess said: “Talking to someone, whether it’s a friend, family member, or teacher, is something you can do to make yourself feel that little bit better.
“And you can also play your part in helping others to feel better too, whether offering a friendly ear, or helping someone in need.
“Small acts of kindness can go such a long way.
But as we help others, we mustn’t forget to nurture ourselves, by taking the time to focus on the things that make us feel happy too.”
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“Being unable to see your friends or spend time with your family will undoubtedly be frustrating for you, just as it is for them.
“It’s been a really difficult time for us all.
But it’s important to know that these feelings and frustrations are totally normal, and that they won’t last forever.”
She added: “As we help others, we mustn’t forget to nurture ourselves by taking the time to focus on the things that make us feel happy too.
“This might be playing our favourite game, being outside, or talking to our friends.
“They all help with our mental wellbeing.
Thank you for inviting me to speak to you today.
Look after yourselves, reach out when you need help, and do your part to support those in need.”