Janine must rethink her lesson plans after her class performs poorly on a practice test in a new episode of "Abbot Elementary ...

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

Don’t miss Abbott Elementary Season 4, Episode 9! Enjoy the hilarious crossover with It's Always Sunny in Philadelphia. Watch ...

The anticipation for Abbott Elementary and It’s Always Sunny crossover episode has been building up among the fans of both ...

The anticipation for Abbott Elementary and It’s Always Sunny crossover episode has been building up among the fans of both ...

Spoilers for the Abbott Elementary and It’s Always Sunny in Philadelphia crossover are ahead! If you haven’t watched the ...

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

In true TV crossover fashion, everyone learns a lesson when the It's Always Sunny in Philadelphia gang visits Abbott ...

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 ...

In the clip, from Abbott Elementary’s season four episode Volunteers, the staff at the elementary school meet the misfits from It’s Always Sunny In Philadelphia, who have arrived under the guise of ...

The two sitcoms could hardly be more tonally different, but this week’s crossover episode of “Abbott” was relatively seamless ...

How did they pull off a crossover event between a wholesome school sitcom and raunchy, unhinged comedy? Here’s a rundown of every delightful, slightly deranged plot point.