Following their kiss, Janine and Gregory’s relationship status will be revealed during the season four premiere.

“Abbott Elementary” star and creator, Quinta Brunson, and “It’s Always Sunny in Philadelphia” star and co-creator. Rob McElhenney, both shared news they’re collaborating on a crossover episode on social media.

As usual, the overworked staff will have to battle on against underfunding, an uncaring school district and a tone-deaf principal, while the Season 4 trailer below reveals that they'll also have to overcome a ringworm outbreak that threatens to infect the whole building.

The fourth season of "Abbott Elementary" is expected to have a crossover episode with "It's Always Sunny in Philadelphia" and a Christmas special episode.

The fourth season of ABC's hit show 'Abbott Elementary' debuts Wednesday at 9:30 p.m. on 6abc. There's a lot of movement in this week's playoff picture after a chaotic Week 6. Week 5 is in the books and oh my there's a lot of panic on these fantasy streets.

The ABC sitcom wobbled in its third season, but Quinta Brunson and her team have restored order within the hilarious Abbott universe.

Season 4 of "Abbott Elementary" premieres Wednesday at 9:30pm on ABC. Catch up quick: The Philly-centered mockumentary left this year's Emmy Awards empty-handed. The comedy series lost five of its nine nominations to "The Bear,