September is here and summer break is officially over for Prince William and Kate Middleton’s three kids. (Womp, womp!) While Prince George, 12, Princess Charlotte, 10, and Prince Louis, 7, are, no doubt, sad about going back to school, their parents might be feeling emotional for a different reason.

The royal siblings had their first day of school this morning, Sept. 3, per PEOPLE, and it marked an important milestone: the last year all three kids will be at the exact same school together!

The kids go to Lambrook School, where George is in Year 8, Charlote is in Year 6, and Louis is in Year 3. As traditional for royals and other wealthy British families, when George turns 13 and prepares for Year 9 next year, he will leave his co-educational prep school and go to a boarding school for b

See Full Page