Paddy's Gang are ready to volunteer at Abbott Elementary. It might be always ... The crew is mostly happy to be there, until Dennis (Glenn Howerton) notices the cameras filming them.

Here’s how it works. The Story Behind How It's Always Sunny And Abbott Elementary's Crossover Came To Be: 'It Moved Quickly Past Just An Aside Or A Joke' It was a funny gag in the episode ...

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

Brunson wasn’t the only person to warn unsuspecting Abbott Elementary fans about checking out It’s Always Sunny, which stars Rob McElhenney, Charlie Day, Kaitlin Olson, Glenn Howerton, and Danny ...

Abbott faculty finally meet in the first teaser ... DeVito’s Frank arguing over who’s a bigger piece of trash, and Glenn Howerton’s Dennis scurrying away suspiciously after the gym’s ...

to cross paths with Frank (Danny DeVito), Charlie (Charlie Day), Dee (Kaitlin Olson), Mac (Rob McElhenney), and Dennis (Glenn Howerton). So when does Abbott Elementary return with new episodes on ABC?

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

It might be always sunny in Philadelphia, but that doesn't mean there aren't some clouds about to hit Abbott Elementary school. But Dennis isn't having it. "No, I don't think so," he says.

The crew is mostly happy to be there, until Dennis (Glenn Howerton) notices the cameras filming them ... and Danny DeVito on 'Abbott Elementary' But Dennis isn't having it. "No, I don't think so," he ...