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 Sunny in Philadelphia," which has aired on FXX since 2013.

The highly anticipated crossover episode of “Abbott Elementary” and “It’s Always Sunny in Philadelphia” blends the raunchy, NSFW style of the FX show with the witty, family-friendly romp.

Patrick Schumacker and Justin Halpern also tell TheWrap about an NSFW moment that was cut for ABC The post ‘Abbott Elementary,’ ‘It’s Always Sunny’ Crossover: Showrunners Unpack Charlie’s Illiteracy,