Conversation so far:
When was John Adams born?
John Adam's was born October 30, 1735.
Who were John Adams' parents?
His parents were John Adams Sr. and Susanna Boylston.
What was John Adams' mother's name?
His mother's name is Susanna Boylston.
What did John Adams' father do?
His father was a deacon in the Congregational Church, a farmer, a cordwainer, and a lieutenant in the militia.
What did John Adams' mother do?
Susanna Boylston Adams Hall (March 5, 1708 – April 17, 1797) was a prominent early-American socialite.
Where did John Adams go to school?
Adams attended Braintree Latin School under Joseph Cleverly.

Question: what did he study there?
Self-contained rewrite: What did John Adams study there?