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.

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

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

The collaboration commences with Season 4, Episode 9, of "Abbott Elementary," airing Jan. 8, and will continue with a follow-up episode of "It's Always Sunny in Philadelphia," expected to air in the show's upcoming Season 17.

For fans of both It’s Always Sunny In Philadelphia and Abbott Elementary, this is probably their most highly anticipated week on the 2025 TV schedule. That's because the first of two crossover episodes between the beloved Philly-based comedies will premiere today (Jan.

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

Two comedy forces collided this week on Abbott Elementary, as the school staff welcomed the Paddy’s Pub gang from FXX’s It’s Always Sunny in Philadelphia. Did the crossover episode make the grade, though?

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

"Abbott Elementary" star Janelle James is schooling us on that "It's Always Sunny" crossover and unwinding with the help of "rich people" wellness.

A live TV streaming service that includes ABC in its channel lineup will do the trick. Hulu Plus Live TV and YouTube TV are among the options -- both start at $83 per month -- and you can stream the Abbott Elementary episode with Sling Blue if you're in a select city.

ABC is ready to get back to class with a new teaser for ;Abbott Elementary's upcoming crossover with 'It's Always Sunny in Philadelphia'.