Janine must rethink her lesson plans after her class performs poorly on a practice test in a new episode of "Abbot Elementary."

"Abbott Elementary" is airing the 9th episode of its 4th season on Wednesday, Jan. 8 at 9:30 p.m. The episode will be a crossover with "It's Always Sunny in Philadelphia." There are several ways to watch with a free live stream.

Episode 10 of season four of “Abbott Elementary” is called “Testing.” “Abbott Elementary” airs at 8:30 p.m. Wednesday, Jan. 15, 2025, on ABC.

There will just be these white people on the show all of the sudden.” Did you miss the crossover? No worries; it’s streaming on Hulu now. Take advantage of that free trial, and once you’ve watched, be sure to come back to DECIDER to read our spoiler-filled interview with Always Sunny EP and star Charlie Day.

Don’t miss the unexpected twist when Ava announces that a group of volunteers from the school district will be coming to lend a hand at Abbott Elementary.

Episode nine of season four on ABC is called "Volunteers" and features the cast of "It's Always Sunny in Philadelphia."

In 2024, 9-1-1 and The Bachelor memorably joined forces for the most dramatic emergency in Bachelor Nation history. And this year, the network is making comedy history when the It’s Always Sunny in Philadelphia gang crashes Abbott Elementary for an unforgettable crossover episode.

A new “Abbott Elementary” episode brings volunteers from “It’s Always Sunny in Philadelphia.” The crossover episode airs Wednesday, Jan. 8, at 8:30 p.m. ET on ABC.

Abbott Elementary season 4 episode 10 will air a little later tonight on ABC due to President Joe Biden's farewell address. Get the new release time for this week and a look at what to expect.