Conversation so far:
When was fred born?
CANNOTANSWER.
Where was he born?
Latrobe, Pennsylvania.
who were his parents?
James and Nancy Rogers.
did he have any siblings?
he had one sister, Elaine.
where did he go to school?
Rogers graduated from Latrobe High School (1946).
He studied at Dartmouth College (1946-48), then transferred to Rollins College.

Question: what did he study?
Self-contained rewrite: what did Fred Rogers study?