Principal Tom Petersen, usually known as Principal Petersen is the principal of Medford High School.

Like many of the teachers and the students, he wants Sheldon out of this school. However, he also realizes that Sheldon has the highest aptitude test score, and that gives funding for the school.

In the episode "Graduation," he reveals that he was the son of a teenage mother to a distraught female student who discovers that she is pregnant.

Appearances

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Young Sheldon Characters, Cast & Crew
Main Characters Main Sheldon Cooper  ‧  Mary Cooper  ‧  George Cooper Sr.  ‧  George Cooper Jr.  ‧  Missy Cooper  ‧  Meemaw  ‧  Jeff Difford
Recurring and Minor Characters Tam Nguyen  ‧  Veronica Duncan  ‧  Billy Sparks  ‧  Brenda Sparks  ‧  Herschel Sparks  ‧  Victoria McElroy  ‧  Evelyn Ingram  ‧  Wayne Wilkins  ‧  Hubert Givens  ‧  Sheryl Hutchins  ‧  Gene Lundy  ‧  Tom Petersen  ‧  Le Nguyen  ‧  Trang Nguyen  ‧  Mai Nguyen  ‧  Kim-Ly Nguyen   ‧  John Sturgis  ‧  Paige Swanson  ‧ Barry Swanson  ‧  Linda Swanson  ‧  Erica Swanson  ‧  Dale Ballard  ‧  Selena  ‧  Robin Difford  ‧  Jana  ‧  Marcus Larson  ‧  June
Cast Regulars Iain Armitage  ‧  Zoe Perry  ‧  Lance Barber  ‧  Montana Jordan  ‧  Raegan Revord  ‧  Annie Potts  ‧  Matt Hobby  ‧  Jim Parsons
Recurring Ryan Phuong  ‧  Isabel May  ‧  Wyatt McClure  ‧  Melissa Peterman  ‧  Billy Gardell  ‧  Valerie Mahaffey  ‧  Danielle Pinnock  ‧  Doc Farrow  ‧  Brian Stepanek  ‧  Sarah Baker  ‧  Rex Linn  ‧  Wallace Shawn  ‧  McKenna Grace  ‧  Craig T. Nelson  ‧  Ava Allan  ‧  Jason Alexander  ‧  Reba McEntire
As Selves Elon Musk
Crew Writers Chuck Lorre * (Creator)  ‧  Steven Molaro * (Creator)
Directors Jon Favreau
Others
Science consultant : David Saltzberg Director of photography : Steven V. Silver
Executive Producers : Steven Molaro / Jim Parsons / Todd Spiewak Unit production manager : Kelly-Anne Lee *
Theme composer / performer : Steve Burns (performer) / Rob Cavallo (producer) Chuck Lorre Productions
also as Producer Young Sheldon : Full cast & crew on IMDb
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