Although the holidays are barely over, ABC is ready to get back to class with a new teaser for Abbott Elementary‘s upcoming crossover with It’s Always Sunny in Philadelphia. In a new promo for the two-episode event,

Watch a teaser video for the upcoming crossover episode between 'Abbott Elementary' and 'It's Always Sunny in Philadelphia,' premiering on Jan. 8.

"The Gang" is all here - and bringing absolute chaos to Abbott Elementary. The cast of It's Always Sunny in Philadelphia made its way to the ABC show, which is set in Philly, for the crossover episode of comedy writers' dreams.

The Gang and the Willard R. Abbott faculty finally meet in the first teaser for the long-awaited crossover episode between the two great Philly sitcoms, Abbott Elementary and It's Always Sunny in Philadelphia.