Princess Charlotte will start school at Thomas's Battersea this fall

PHOTO: Britains Princess Charlotte and Prince George attend the wedding of Princess Eugenie of York and Jack Brooksbank at St Georges Chapel, Oct. 12, 2018, in Windsor, England.PlayMaz Mumby/Pool via Getty Images
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His younger sister, Princess Charlotte, will attend his school, Thomas's Battersea School, starting in September, Kensington Palace announced Friday.

The private school is located in Battersea, South London, less than four miles from Kensington Palace, where Charlotte and George live with their brother, Prince Louis, and parents, Prince William and Kate.

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 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.

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.

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.

PHOTO: Princess Charlotte of Cambridge attends the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England. Max Mumby/Getty Images, FILE
Princess Charlotte of Cambridge attends the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.
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 Georges Chapel in Windsor Castle, in Windsor, England, May 19, 2018. Jane Barlow/AFP/Getty Images, FILE
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: Britains Princess Charlotte and Prince George attend the wedding of Princess Eugenie of York and Jack Brooksbank at St Georges Chapel, Oct. 12, 2018, in Windsor, England. Maz Mumby/Pool via Getty Images
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: 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. Marys Hospital to meet her new baby brother, Louis, April 23, 2018 in London. Karwai Tang/Getty Images, FILE
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: 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. Jamess Palace in London, July 9, 2018. Dominic Lipinski/Pool via Getty Images
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.