Denmark’s royal family confirmed the four siblings – the oldest of whom, 13-year-old Prince Christian, is second in line to the throne – will be spending some time abroad.
Crown Princess Mary will, however, accompany the children for much of their stay.
Prince Christian’s younger siblings are Princess Isabella, 12, and twins Prince Vincent and Princess Josephine, 8.
Although the announcement is less dramatic than the removal of five of the grandchildren of King Carl XVI Gustaf from the Swedish royal house, it does mean that Crown Princess Mary will have fewer official duties.
The Crown Princess told TV2 she saw the time away as an opportunity for her children.
“We see it as a gift for our children that they can share, and a gift they will have for the rest of their lives,” she said.
Once their stay at the Swiss school is over, the royal siblings will return to their regular school in Gentofte near Copenhagen.
The decision follows in the footsteps of Crown Prince Frederik, who went to school in France as a teenager along with his younger brother Prince Joachim.