Prince George and Princess Charlotte will not be returning to class as scheduled this week.

Like many other schools across London, Thomas’s Battersea will close once again after the holiday break in an effort to stop the spread of COVID-19. 

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In a tweet, London Mayor Sadiq Khan said that keeping schools closed from Jan. 4 is “the right decision”. 

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George, 7, has attended Thomas’s Battersea, since 2017, while Charlotte, 5, started in 2019.

It was previously expected that Prince Louis would also begin nursery school this week. Both of his siblings started at the age of two and in the month of January.

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Prince William and Kate Middleton revealed that they homeschooled their children during the first U.K. lockdown.