After much anticipation, the unlikely meeting of the two worlds unfolded on Wednesday's installment of "Abbott Elementary." ...

The cast of "It's Always Sunny in Philadelphia" will appeared on "Abbott Elementary." Here's how to watch, when it airs and what to know about the crossover.

Their next test? When the cast of “Abbott Elementary” appears in an episode of “It’s Always Sunny in Philadelphia,” as is planned for the coming season. We now know that the “Sunny ...

This matchup brought together two Philly casts: “Abbott Elementary” and “It’s Always Sunny in Philadelphia.” The crossover ...

The outrageous Abbott Elementary and It’s Always Sunny In Philadelphia crossover proved that the best combinations are ...

ABC and Quinta Brunson's Abbott Elementary is returning for Season 5 - and the crossover with It's Always Sunny in ...

The Abbott Elementary & It's Always Sunny In Philadelphia crossover was a hit, but Glenn Howerton’s Dennis was mysteriously ...

Abbott Elementary” has made it to the fifth grade. Quinta Brunson’s scholastic sitcom has been renewed for Season 5 at ABC.

In Abbott Elementary Season 4, Episode 9: “Volunteers” the eponymous Philadelphia school was visited by Paddy’s Pub proprietors Dennis, Sweet Dee, Mac, Charlie, and Frank from neighboring ...

Mr. Johnson and Frank's rivalry is based on absolutely nothing, and that's what makes the Abbot Elementary and It's Always ...

The "Abbott Elementary" and "It's Always Sunny in Philadelphia" crossover episode aired Wednesday, bringing together two completely different Philly sitcom casts for an epic explosion of "Go Birds ...