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 hilarious character interactions, but it hid callbacks in its witty writing.

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.

Spoilers for the Abbott Elementary and It’s Always Sunny in Philadelphia crossover are ahead! If you haven’t watched the first half of this event yet, you can stream the Abbott episode with a Hulu ...

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 ...

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

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

“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 ...

When will the It’s Always Sunny in Philadelphia episode air? While we know for a fact that the Abbott Elementary episode of the two-part crossover event will occur on January 8, the exact date ...

"Abbott Elementary" just got a bit sunnier and a tad sassier. The hit ABC sitcom is joining forces with the cast of FX's "It's Always Sunny in Philadelphia" for a two-part crossover that's sure to ...