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

The Abbott Elementary & It's Always Sunny In Philadelphia crossover had some ridiculous rivalries, but Charlie got a surprisingly uplifting subplot.

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

The Abbott Elementary & It's Always Sunny In Philadelphia crossover had hilarious character interactions, but it hid callbacks in its witty writing.

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 ...

Of course, Abbott almost definitely would have been renewed regardless of Always Sunny‘s influence. This isn’t the first ...

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

Spoilers* In the highly anticipated ninth episode of “Abbott Elementary’s” fourth season, which aired on Wednesday, Jan. 8, ...

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

The "Abbott Elementary" and "It's Alway Sunny in Philadelphia" crossover also marked a series high with more than 8 million ...

“Sweet Baby Jesus and the grown one too.” The ‘Abbott Elementary’ and ‘It’s Always Sunny in Philadelphia’ crossover episode (the first of two) is officially happening. Airing January ...

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 ...