Many CEOs take the word “retirement” figuratively, using the opportunity to become a full-time volunteer or to launch a second career. Don’t count 65-year-old Rene Champagne among those people. “I’ll be pursuing the leisure activities-like golf, tennis, fishing, traveling with my wife-that I don’t have time to do as CEO,” said the CEO and chairman of ITT Educational Services Inc., who announced Jan. 24 that he’s retiring from the Carmel-based company. Although he plans to remain in Indianapolis, “I don’t…