Aug. 6–9. Connor Thomas Rhoades directs local actors in William Finn and Rachel Sheinkin’s Tony-winning 2004 one-act musical comedy about 6 anxiously overachieving adolescents competing in a spelling bee run by 3 adults who have barely managed to escape childhood themselves. 7 p.m. (Thurs.–Sat.) & 1 p.m. (Sat. & Sun.), Lydia Mendelssohn Theatre, 911 North University. $23 (students & seniors, $21) at horizonpa.yapsody.com & at the door.