Conversation so far:
When was Walter Hagen born?
Walter Hagen was born December 21, 1892.
Where was Walter Hagen born?
Walter Hagen was born in Rochester, New York.
Who were Walter Hagen's parents?
Walter Hagen's parents were William and Louisa (Boelke) Hagen, his father worked as a millwright and blacksmith in Rochester's railroad-car shops.
Did Walter Hagen have any siblings?
Walter Hagen was the second of William and Louisa's five children and the only son.

Question: where did he go to school?
Self-contained rewrite: Where did Walter Hagen go to school?