Conversation so far:
Where did Bernard Lewis graduate HS from?
CANNOTANSWER.
What did he go to school for?
University of London with a BA in history with special reference to the Near and Middle East.
When did he graduate?
In 1936, Lewis graduated from the School of Oriental Studies.

Question: What did he focus on after school?
Self-contained rewrite: What did Bernard Lewis focus on after school?