THE INDIANA REPERTORY THEATRE in Indianapolis will stage Shakespeare's ``Macbeth'' in daily matinees for high school audiences over a three-week period next February. Previously, students could attend morning performances of plays in the regular Mainstage season. The new program concentrates on Shakespeare plays that are included in English courses. A CHANCE TO LEARN MORE about the current exhibition at the Henry Art Gallery at the University of Washington in Seattle comes Oct. 5, when a panel discusses the show ``Life Stories: Myth, Fiction, and History in Contemporary Art.'' Artist Jerome Watkin and art critic Theodore F. Wolff will talk about the exhibition, and on Oct. 6 will lead a free walk-through of it.