Thomas's Battersea has around 550 students from a variety of backgrounds. The school teaches a range of traditional subjects, along with ballet, art, drama, French, music and physical education.

Thomas's Battersea's most important rule is \"be kind,\" the school notes on its website.

\"We are delighted that The Duke and Duchess of Cambridge have decided that Princess Charlotte will join her elder brother, Prince George, at Thomas's Battersea,\" the school's headmaster, Simon O'Malley, said in a statement. \"We greatly look forward to welcoming her and all of our new pupils to the school in September.\"

Prince George, 5, started at the school, where he is known as George Cambridge, in September 2017.

Charlotte, 4, will be known at Thomas's Battersea as Charlotte Cambridge. Charlotte previously attended Willcocks Nursery School, also in London.

The Duke and Duchess of Cambridge are very pleased to share two photographs of Princess Charlotte at Kensington Palace this morning. pic.twitter.com/dDIOZdA7aM

— Kensington Palace (@KensingtonRoyal) January 8, 2018

The only daughter of Prince William and Kate has developed a reputation as a fun and spirited member of Britain's royal family.

She was seen running with a flower in hand and sitting on a fence in a dress in photos released earlier this month for her fourth birthday.

View this post on Instagram

A post shared by Kensington Palace (@kensingtonroyal) on May 1, 2019 at 2:31pm PDT

When Kate and William brought their kids to Kate's display at the Chelsea Flower Show this week, Charlotte ran in the garden, jumping on a swing and dangling her bare feet in the water with George.

\"I really feel that nature and being interactive outdoors has huge benefits on our physical and mental wellbeing, particularly for young children.\" — The Duchess of Cambridge #RHSChelsea pic.twitter.com/uDLOXQY8L7

— Kensington Palace (@KensingtonRoyal) May 19, 2019

In appearances with the royal family, Charlotte has become legendary for giving a wave, or a look, to gathered crowds.

Take a look at some of her adorable moments.

Hallo Berlin! The Duke and Duchess of Cambridge, Prince George and Princess Charlotte arrive for #RoyalVisitGermany🇩🇪 pic.twitter.com/MbQcALPsqt

— Kensington Palace (@KensingtonRoyal) July 19, 2017
\"PHOTO:
Max Mumby/Getty Images, FILE
PHOTO: Princess Charlotte of Cambridge attends the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.
>
\"PHOTO:
Jane Barlow/AFP/Getty Images, FILE
PHOTO: Prince William, Duke of Cambridge and his daughter Princess Charlotte leave after attending the wedding ceremony of Prince Harry, Duke of Sussex and Meghan Markle at St George's Chapel in Windsor Castle, in Windsor, England, May 19, 2018.
>
\"PHOTO:
Maz Mumby/Pool via Getty Images
PHOTO: Britain's Princess Charlotte and Prince George attend the wedding of Princess Eugenie of York and Jack Brooksbank at St George's Chapel, Oct. 12, 2018, in Windsor, England.
>
\"PHOTO:
Karwai Tang/Getty Images, FILE
PHOTO: Princess Charlotte waves to the press as she arrives with her father, Prince William, Duke of Cambridge and Prince George to the Lindo Wing of St. Mary's Hospital to meet her new baby brother, Louis, April 23, 2018 in London.
>
\"PHOTO:
Dominic Lipinski/Pool via Getty Images
PHOTO: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge with their children Prince George, Princess Charlotte and Prince Louis leave after Prince Louis' christening at St. James's Palace in London, July 9, 2018.
>","canonicalUrl":"https://abcnews.com/GMA/Culture/princess-charlotte-start-school-thomass-battersea-fall/story?id=63254553","legacySlug":"/culture/story/princess-charlotte-start-school-thomass-battersea-fall-63254553","noIndexNoFollow":false},"publishTime":"15:04","publishDate":"05-24-2019","updatedTime":"17:09","updatedDate":"05-24-2019","socialImage":{"alt":"Britain's Princess Charlotte and Prince George attend the wedding of Princess Eugenie of York and Jack Brooksbank at St George's Chapel, Oct. 12, 2018, in Windsor, England.","credit":"Maz Mumby/Pool via Getty Images","ratio":"16x9","url":"https://s.abcnews.com/images/GMA/charlotte-george-gty-ps-190524_hpMain_16x9_1600.jpg","width":992,"height":558},"datePublished":"5/24/2019 15:04:00 GMT","video":{"live":false,"id":63254553,"headline":"Princess Charlotte's new school announced","mediaAssetTitle":"GMA_Princess Charlotte_190524","description":"Kensington Palace made the princess' school announcement on Friday.","duration":"0:46","posterImg":{"url":"https://s.abcnews.com/images/GMA/default-img-undefined.png","width":608,"height":342},"video":{"feed":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2019/05/190520_abc_social_royals_garden_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8"},"playlist":["63172158","63171149","63138791"]},"relatedItems":[{"contentType":"story","date":"May 22, 2019","headline":"Inside Prince Harry and Meghan's life as new parents","section":"culture","slug":"/culture/story/nanny-hand-prince-harry-meghans-life-parents-baby-63172158","id":63172158,"image":{"alt":"Inside Prince Harry and Meghan's life as new parents","url":"https://s.abcnews.com/images/International/baby-3-gty-er-190508_hpMain_4x3t_240.jpg","credit":"Dominic Lipinski/Pool/AFP/Getty Images, FILE","ratio":"1x1"}},{"contentType":"story","date":"May 21, 2019","headline":"Duchess Kate gives Queen Elizabeth a tour of her new, interactive garden ","section":"culture","slug":"/culture/story/duchess-kate-queen-elizabeth-ii-tour-chelsea-flower-63171149","id":63171149,"image":{"alt":"Duchess Kate gives Queen Elizabeth a tour of her new, interactive garden ","url":"https://s.abcnews.com/images/GMA/royals-gty-ml-190521_hpMain_4x3t_240.jpg","credit":"Geoff Pugh/AFP/Getty Images","ratio":"1x1"}},{"contentType":"story","date":"May 19, 2019","headline":"Duchess Kate brings her kids to enjoy new garden she designed","section":"culture","slug":"/culture/story/duchess-kate-brings-kids-enjoy-garden-designed-early-63138791","id":63138791,"image":{"alt":"Duchess Kate brings her kids to enjoy new garden she designed","url":"https://s.abcnews.com/images/GMA/royals-5-ap-er-190519_hpMain_2_4x3t_240.jpg","credit":"Matt Porteous/Kensington Palace via AP","ratio":"1x1"}}],"relatedContentSection":"news","schemaContent":{"name":"Princess Charlotte's new school announced","description":"Kensington Palace made the princess' school announcement on Friday.","duration":"0:46","uploadDate":"05-24-2019","publication":"05-24-2019","images":"https://s.abcnews.com/images/GMA/default-img-undefined.png","url":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2019/05/190520_abc_social_royals_garden_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8","contentUrl":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2019/05/190520_abc_social_royals_garden_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8","link":"https://www.goodmorningamerica.com/culture/story/princess-charlotte-start-school-thomass-battersea-fall-63254553"}},"playlist":[{"id":"132054443","contentType":"story","section":"news"},{"id":"132054798","contentType":"story","section":"news"},{"id":"132033010","contentType":"story","section":"news"},{"id":"131912713","contentType":"story","section":"news"},{"id":"131830583","contentType":"story","section":"news"},{"id":"131834976","contentType":"story","section":"news"},{"id":"131554765","contentType":"story","section":"news"},{"id":"131554815","contentType":"story","section":"news"},{"id":"131543053","contentType":"story","section":"news"},{"id":"131432442","contentType":"story","section":"news"},{"id":"131121474","contentType":"story","section":"news"},{"id":"131247079","contentType":"story","section":"news"},{"id":"131228784","contentType":"story","section":"news"},{"id":"131178806","contentType":"story","section":"news"},{"id":"131142257","contentType":"story","section":"news"},{"id":"131046664","contentType":"story","section":"news"},{"id":"131048076","contentType":"story","section":"news"},{"id":"131033212","contentType":"story","section":"news"},{"id":"130999943","contentType":"story","section":"news"},{"id":"130971027","contentType":"story","section":"news"}],"kvps":{"pgtyp":"article","lang":"en","sp":"goodmorningamerica","programmatic":"true","bundleId":"com.abcnews"}},"analytics":{"accountID":"wdgnewwdgnewgmaweb","ns":"gma","pageName":"gma:culture:video","pageType":"video","globalSpecVersion":"v1.08","siteDifferentiator":"gma:site","tagID":"g_page01","userABCookie":"0","section":"culture","title":"Princess Charlotte's new school announced","pubTime":"11:04","pubDate":"05-24-2019","modTime":"13:09","modDate":"05-24-2019","taxonomyTags":"none","id":63254553,"editorialOtherSubjects":"","wordCount":"none","columns":"none","authors":"","authorsUnit":"none","authorsBureau":"none","subBrand":"Good Morning America","provider":"Good Morning America","videoName":"Princess Charlotte's new school announced","mediaAssetTitle":"GMA_Princess Charlotte_190524","videoId":63254553,"mediaOnPage":"video","legacySlug":"/culture/story/princess-charlotte-start-school-thomass-battersea-fall-63254553"},"taboola":{}},"request":{"headers":{},"httpVersion":"1.1","method":"GET","url":"/video/63254553","vary":{"host":"www.goodmorningamerica.com","cached":true,"path":"/video/63254553","forwarded-proto":"https","device":"desktop","userab":"0"}},"viewport":{"width":1260,"height":0},"user":{}};