Kate Middleton is said to be “heartbroken” over an upcoming decision she and Prince William must make regarding Prince George’s future.

According to Mirror, the Prince and Princess of Wales, both 42, are currently considering where to enroll their eldest son after he finishes preparatory school.

Royal expert Katie Nicholl told the outlet that Middleton prefers a co-ed school in England so George can stay with his siblings—however, William reportedly has a different perspective.

Nicholl stated, “Kate’s preference is for George to be at a co-education school, so he can be with his siblings, which is what Kate experienced at Marlborough with her sister, Pippa, and brother, James.”

Middleton attended Marlborough College in Wiltshire from 1996 to 2000.

“It was a very happy school life for her, but William has very fond memories of Eton, which has a long history with aristocrats and members of the royal family,” Nicholl explained.

According to Nicholl, William is determined for George to attend Eton, the prestigious all-boys boarding school where both he and Prince Harry studied.

While George is reportedly eager about the idea of going to his father’s former school, Middleton is said to be “heartbroken” and finds the institution too “stuffy.”

However, Nicholl noted that George might not necessarily follow in William’s footsteps, as William himself did not attend the Scottish boarding school where his father, King Charles III, was enrolled.