Complex sentence: He is a member of the Yale College Class of 1954, before that he was graduated by what is now the Northfield Mount Hermon School, was a member of Wolf's Head Society, and received a Doctor of Humane Letters in 2007 from Yale.
Split into simpler sentences: He is a member of the Yale College Class of 1954. He was a member of Wolf's Head Society at Yale, and received a Doctor of Humane Letters in 2007 from Yale.