Which boarding school did the real Christopher Robin Milne attend?

The real Christopher Robin Milne attended Stowe School.

Christopher Robin Milne was A. A. Milne’s son and the real-life inspiration for the Christopher Robin character. His stuffed animals inspired Pooh and several other residents of the Hundred Acre Wood, although the fictional character develops independently in the stories.

Milne left home to attend Stowe School at the age of nine. This real event relates to the fictional Christopher Robin’s growing up, which becomes especially important in The House at Pooh Corner.

In the final chapter of the sequel, Christopher Robin prepares to leave the Forest and asks Pooh to remember him. That farewell is literary fiction, but it reflects the broader theme of childhood moving toward adolescence and adulthood.