As of Jan. 9, the episode is available to stream on Hulu. The second crossover is expected to be an episode of "It's Always Sunny in Philadelphia," which has aired on FXX since 2013.

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

Charlie learns to read, Dee impersonates Ben Franklin, and Frank fights raccoons. We don't quite know what's up with Dennis though.

The star of the FX series also admits he was initially hesitant about the crossover concept as 'It's Always Sunny in Philadelphia' heads into its 17th season.

It might be always sunny in Philadelphia, but that doesn't mean there aren't some clouds about to hit Abbott Elementary ...

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

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 ...

With the first part of 'Abbott Elementary' and 'It's Always Sunny in Philadelphia's crossover airing Wednesday on ABC, ...

Here's a look at our real-time thoughts on tonight's crossover between FXX's It's Always Sunny in Philadelphia and ABC's Abbott Elementary.

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 ...

The "It's Always Sunny in Philadelphia" crew is headed to "Abbott Elementary" in the first of two crossover episodes. The highly anticipated crossover episode will see Charlie (Charlie Day), Mac (Rob ...