Ms. Sharon Norbury is portrayed by actress Tina Fey. Ms. Norbury is the 12th grade calculus teacher at North Shore High School. She is the coach of the North Shore Mathletes. Sharon bartends a couple of nights a week down at TJ Calamity's in the Old Orchard Mall.
She has recently gotten a divorce of her ex-husband whose name is never said. The school principal, Mr. Ron Duvall, seems to have a crush on her; the dance together at the Spring Fling. Prior to that the only guy that ever called her house was Randy, from Chase Visa.