The "It's Always Sunny in Philadelphia" crew is headed to "Abbott Elementary" in the first of two crossover episodes.

Rob McElhenney teased that the Abbott Elementary/It's Always Sunny in Philadelphia Season 17 crossover may "surprise quite a few people." ...

It’s always busy for the It’s Always Sunny in Philadelphia cast.

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

Rob McElhenney is ready for the world to see the It’s Always Sunny in Philadelphia side of the show’s crossover with Abbott ...

RELATED: Charlie Day Was Eager For The Challenge Of Filming The It’s Always Sunny in Philadelphia / Abbott Elementary Crossover Episodes: “It’s Great Fodder for Comedy” If this episode was ...

The Gang' cleaned up its act when it appeared on the ABC sitcom. But Rob McElhenney says the 'Abbott' teachers will curse and ...

Below, Day chats with THR about pulling off the crossover episodes, his initial hesitations about the idea and why he thinks the next season of It’s Always Sunny will be one of their best.

What time does the Abbott and It’s Always Sunny crossover premiere on ABC ... use your cable username and password to watch live ABC episodes live on ABC.com or with the ABC app.