Guest Star :: Valerie Mahaffey
Valerie Mahaffey has guest starred in 7 episodes of Young Sheldon.
101. Pilot as Ms. MacElroy
Aired September 25, 2017Sheldon embarrasses his home-room teacher by pointing out her mustache.
102. Rockets, Communists, and the Dewey Decimal System as Ms. MacElroy
Aired November 2, 2017When Sheldon goes to Ms. MacElroy after he notices she had checked out the Dale Carnegie book from the school library, she bitterly explains she only borrowed the book to try get a promotion at the school.
104. A Therapist, a Comic Book, and a Breakfast Sausage as Ms. MacElroy
Aired November 16, 2017When Ms. MacElroy asks Sheldon about the medical emergency that made him late for class, he explains he choked on a sausage, prompting laughter from the class.
110. An Eagle Feather, a String Bean, and an Eskimo as Ms. MacElroy
Aired January 4, 2018After Sheldon interrupts Ms. MacElroy's class to ask if she read the course material, she is pleased to hear he's going away to a school in Dallas.
113. A Sneeze, Detention, and Sissy Spacek as Ms. MacElroy
Aired February 1, 2018When Ms. MacElroy sneezes twice while teaching her students about similes and metaphors, Sheldon decides the punishment for skipping class is worth it if he can avoid catching the flu.
201. A High-Pitched Buzz and Training Wheels as Ms. MacElroy
Aired September 24, 2018Sheldon is late for Ms. MacElroy's class after his training wheels broke during his paper route.
212. A Tummy Ache and a Whale of a Metaphor as Ms. MacElroy
Aired January 10, 2019When Sheldon has to spend a few days in the hospital, he turns into the world’s worst patient. Also, Missy gets a taste of what life would be like without her twin.