[2] Riches graduated cum laude at Princeton University with a Bachelor of Arts degree in English literature in 1961.
He then devoted his time to pastoral ministry and teaching at the Reformed Episcopal Seminary at the request of Robert K. Rudolph.
Riches was awarded honorary Doctor of Divinity degrees by the Reformed Episcopal Seminary in 1976 and by Cranmer Theological House in 1997.
He was named professor emeritus of liturgics and theology and retired from Reformed Episcopal Seminary in 2015 after serving there for fifty years.
He was also a visiting professor at Cranmer Theological House and at the Sangre de Cristo Seminary in Westcliffe, Colorado.