VIDEO: First Look - Tomorrow's Season Finale of THE MIDDLE

On tomorrow night's season finale of The Middle, titled "The Graduation," as graduation day approaches, tension begins to build between Frankie and Axl when he ignores her requests for answers about the graduation party she's planning for his special day. Meanwhile, Sue hopes that the sixth time's the charm as she once again attempts to pass her driver's test; and during his final days of Elementary school, a forgetful Brick is reminded by Vice Principal Dunlap (Marion Ross) that he's the class historian and is responsible for putting together a slideshow highlighting the last four years of school for the school assembly, on WEDNESDAY, MAY 22 (8:00-8:30 p.m., ET). Marion Ross ("Happy Days") guest stars as Brick's Vice Principal.