Edward “Ned” V. Parsons was appointed head of the Rivers School by its board of trustees on Monday. Parsons, who is the dean of faculty at Loomis Chaffee Day School in Windsor, Conn., will start his new position on July 1, when Thomas P. Olverson will be retiring after 17 years as the head of school at Rivers, according to an announcement by the trustees. Parsons started as an English teacher at Loomis Chaffee in 1994, before being named dean of students in 1999 and dean of faculty in 2007. He also coached the girls’ varsity ice hockey team for 12 years, and was an admissions associate for three years. He holds a bachelor of arts degree in political science from Middlebury College, a master’s degree in English from Middlebury’s Bread Loaf School of English, and a master’s degree in school leadership from the Harvard Graduate School of Education.