Ida's older sister, Ray, married Avrom Greenbaum, who founded the Glasgow Jewish Institute Players, and her brother, Leon Schuster, was production manager for GJIP, and, later, when it merged with other groups,
Glasgow Unity Theatre. Ida began acting at the age of 15, and was a prominent member of both theatre troupes. Glasgow Unity Theatre, was, she said: “...a particular response to a particular time. These were heady days and after the war we really felt utopia had arrived.” She turned professional in the 1950s. In 1973, she described her feelings about the artist within the community: Well...the bridge games, the social activities for charities which form so much of the pattern, must be partly rejected if one is to survive with any creative energy. And as one grows older, responsibilities increase and energy decreases. This happens to all of us and youth takes over. Make no mistake, our young folk will be holding the reins with great expertise, well equipped for the battles which lie ahead.In 2020, Schuster was known as "the world's oldest podcaster", because she hosted
Old School, an audio series about her life, introduced by actor
Alan Cumming. ==Personal life==