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 ...

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.

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

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?

Kaitlin Olson’s Dee and Glenn Howerton’s Dennis visiting Willard R. Abbott Elementary — and at odds with Quinta Brunson’s Janine, Tyler James Williams’ Gregory, Sheryl Lee Ralph’s ...

The gang goes to Abbott Elementary ... begins with “the gang” — Charlie (played by Charlie Day), Dennis (Glenn Howerton), Mac (Rob McElhenney), Dee (Kaitlin Olson) and Frank (Danny DeVito ...

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