Guest Star :: Rex Linn

 Rex Linn has guest starred in 14 episodes of Young Sheldon.

  1. Pilot

    101. Pilot as Principal Petersen

    Aired September 25, 2017

    On his first day at the school, Sheldon's teachers are already complaining to Principal Petersen about their new student.
  2. An Eagle Feather, a String Bean, and an Eskimo

    110. An Eagle Feather, a String Bean, and an Eskimo as Principal Petersen

    Aired January 4, 2018

    When Principal Petersen worries that his school's curriculum is no longer challenging Sheldon, he suggests Mary and George consider sending him to a gifted school in Dallas.
  3. A Sneeze, Detention, and Sissy Spacek

    113. A Sneeze, Detention, and Sissy Spacek as Principal Petersen

    Aired February 1, 2018

    After Sheldon runs out of a class because his teacher sneezed, Principal Petersen calls George and Mary to his office to discuss the appropriate punishment.
  4. Killer Asteroids, Oklahoma, and a Frizzy Hair Machine

    116. Killer Asteroids, Oklahoma, and a Frizzy Hair Machine as Principal Petersen

    Aired March 29, 2018

    Sheldon is sent to Principal Petersen's office after deliberately acting out after he didn't win the school science fair.
  5. A Loaf of Bread and a Grand Old Flag

    216. A Loaf of Bread and a Grand Old Flag as Principal Petersen

    Aired February 21, 2019

    After Sheldon seems to back communism on the local news, Principal Petersen warns George that he could lose his job.
  6. Albert Einstein and the Story of Another Mary

    217. Albert Einstein and the Story of Another Mary as Principal Petersen

    Aired March 7, 2019

    After finding out that Mary is expecting, George asks Principal Petersen for a raise.
  7. A Perfect Score and a Bunsen Burner Marshmallow

    218. A Perfect Score and a Bunsen Burner Marshmallow as Principal Petersen

    Aired April 4, 2019

    After Principal Petersen calls Sheldon and George to his office, he tells them Sheldon got a perfect score on his PSAT.
  8. A Political Campaign and a Candy Land Cheater

    219. A Political Campaign and a Candy Land Cheater as Principal Petersen

    Aired April 25, 2019

    Sheldon goes to see Principal Petersen with a letter of complaint about the underfunded science department.
  9. The Sin of Greed and a Chimichanga from Chi-Chi's

    308. The Sin of Greed and a Chimichanga from Chi-Chi's as Principal Petersen

    Aired November 21, 2019

    Fearful of losing his most valuable student, Principal Petersen pulls out all the stops to keep George and Sheldon at the school.
  10. : Teenager Soup and a Little Ball of Fib

    310. Teenager Soup and a Little Ball of Fib as Principal Petersen

    Aired December 12, 2019

    Sheldon pleads with Principal Petersen to let him out of swim practice.
  11. : A House for Sale and Serious Woman Stuff

    319. A House for Sale and Serious Woman Stuff as Principal Petersen

    Aired April 2, 2020

    Sheldon approaches Principal Petersen to see if he would be interested in buying the house next door.
  12. : A Secret Letter and a Lowly Disc of Processed Meat

    321. A Secret Letter and a Lowly Disc of Processed Meat as Principal Petersen

    Aired April 30, 2020

    Principal Petersen appears on Sheldon's video to show support for him going to college.
  13. : Graduation

    401. Graduation as Principal Petersen

    Aired November 5, 2020

    After graduating high school, Sheldon has a breakdown when he realizes he may not be ready for college. Also, Dale tries to make amends with Meemaw.
  14. : An Existential Crisis and a Bear That Makes Bubbles

    408. An Existential Crisis and a Bear That Makes Bubbles as Principal Petersen

    Aired February 18, 2021

    Meemaw takes matters into her own hands when Sheldon's philosophy teacher, Professor Ericson (Melanie Lynskey), sends him into a tailspin. Also, George Sr. learns Georgie has been cutting class.
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