Playwright Margaret Edson talks proudly about her Pulitzer Prize and her work appearing on Broadway, but she's the most animated when she discusses “Wit” being read in another place — the classroom. The middle school social studies teacher happily rattles off a list of programs where her one — and only — play is studied, from high school literature classes to chaplaincy training to medical schools. The story about a college professor dying of ovarian cancer in the oncology wing of a hospital has captivated audiences across the globe since it debuted in 1995 at South Coast Repertory theater in Costa Mesa, California.