The entire first season took over a year to film due to all the shutdowns with COVID-19. Filming for the first season started in November of 2019 and was wrapped up in February of 2021.
John Stamos, who plays Marvyn Korn, never grew up playing sports and has never been a fan of sports.
No stunt doubles were used in the basketball scenes.
John Stamos (Marvyn) and Jessalyn Gilsig (Holly) both were on Glee, but they never crossed paths on the show. Jessalyn was the first wife of the Glee coach and John was a reoccurring guest star that married the Glee school counselor.
Every time Marvyn Korn (John Stamos) goes to get coffee in the teachers lounge, the coffee pot is empty and the machine needs to be rebrewed.