Guest Star :: Valerie Mahaffey
Valerie Mahaffey has guest starred in 14 episodes of Young Sheldon.
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101. Pilot as Ms. MacElroy
Aired September 25, 2017
Sheldon embarrasses his home-room teacher by pointing out her mustache.
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102. Rockets, Communists, and the Dewey Decimal System as Ms. MacElroy
Aired November 2, 2017
When 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.
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104. A Therapist, a Comic Book, and a Breakfast Sausage as Ms. MacElroy
Aired November 16, 2017
When 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.
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110. An Eagle Feather, a String Bean, and an Eskimo as Ms. MacElroy
Aired January 4, 2018
After 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.
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113. A Sneeze, Detention, and Sissy Spacek as Ms. MacElroy
Aired February 1, 2018
When 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.
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201. A High-Pitched Buzz and Training Wheels as Ms. MacElroy
Aired September 24, 2018
Sheldon is late for Ms. MacElroy's class after his training wheels broke during his paper route.
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212. A Tummy Ache and a Whale of a Metaphor as Ms. MacElroy
Aired January 10, 2019
Sheldon has to leave Ms. MacElroy's class on Moby Dick when he gets a tummy ache.
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219. A Political Campaign and a Candy Land Cheater as Ms. MacElroy
Aired April 25, 2019
When he decides to run for student office, Sheldon turns to Ms. MacElroy who is in charge of the elections.
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302. A Broom Closet and Satan's Monopoly Board as Ms. MacElroy
Aired October 3, 2019
The teachers of Medford High are not overly concerned when Sheldon stops showing up for classes.
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304. Hobbitses, Physicses and a Ball with Zip as Ms. MacElroy
Aired October 17, 2019
Sheldon interrupts Ms. MacElroy's English class to ask about the chronology of Tolkien's "The Lord of the Rings".
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308. The Sin of Greed and a Chimichanga from Chi-Chi's as Ms. MacElroy
Aired November 21, 2019
The teachers reluctantly agree to be nice to Sheldon when Principal Petersen fears losing his most valuable student.
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310. Teenager Soup and a Little Ball of Fib as Ms. MacElroy
Aired December 12, 2019
Ms. MacElroy is delighted when Sheldon misses a day of school and on her birthday, no less.
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319. A House for Sale and Serious Woman Stuff as Ms. MacElroy
Aired April 2, 2020
Sheldon approaches his teachers to see if they would be interested in buying the house next door.
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321. A Secret Letter and a Lowly Disc of Processed Meat as Ms. MacElroy
Aired April 30, 2020
Ms. MacElroy appears on Sheldon's video to show support for him going to college.