For a solid year, the ghost light on the stage of the Goodman Theatre has shone in lonely silence on a classroom at the Aburi Girls’ Secondary School, the set for Jocelyn Bioh’s “School Girls; Or, the African Mean Girls Play,” nipped in the bud last spring. “Just a wonderful play,” said Robert Falls, the artistic director of the Goodman. “We were in previews, and the audience was loving it. We were three days from opening.” Opinion I called Falls because I was wondering, with vaccine being pumped into arms and hope of a returned world flickering, how the Chicago theater commun...