Conversation so far:
Is Simon in England from this Simon & Garfunkel article an album or an actual trip to England?
Simon moved to England, where he had previously visited and played some gigs.
What did Simon from Simon & Garfunkel do in england after he moved to England?
A small music publishing company, Lorna Music, licensed Carlos Dominguez, a single Simon had recorded two years prior as Paul Kane, for a cover by Val Doonican that sold well.
Was Simon from Simon & Garfunkel  still performing music when he moved to England?
Simon toured small folk clubs.
Did Simon in England release any successful songs?
Simon's landlady had compiled a tape from his work and sent it to the BBC. The demos aired on the Five to Ten morning show, and were instantly successful.
When were the demos that Simon's landlady sent to the BBC released?
After Simon returned to England in January 1965
What other things was Simon doing in England besides the successful release of his demo tapes?
Simon toured small folk clubs, befriending British folk artists.
Who did Simon make friends with in England when he toured small folk clubs, befriending British folk artists?
Bert Jansch, Martin Carthy
Did he make other friends besides Bert Jansch, Martin Carthy while there in England when he toured small folk clubs, befriending British folk artists?
Al Stewart, and Sandy Denny
Did Simon know anyone else besides Bert Jansch, Martin Carthy, Al Stewart, and Sandy Denny while in England?
Simon met Kathy Chitty, who became the object of his affection and is the Kathy in Kathy's Song and America.
Is there anything else interesting about Simon in England besides him touring small folk clubs befriending British folk artists?
Near the end of the season, Garfunkel returned to Columbia for class, and Simon surprised his friends by saying that he would return to the States as well.

Question: What kind of class?
Self-contained rewrite: What kind of class did Garfunkel return to Columbia for?