[2] On January 8, 2020, Martinez announced through her Instagram stories that she would release an EP titled After School that would be attached to the K–12 era.

[6] On February 9, 2020, Martinez confirmed through her Instagram story that the EP would be out in spring, but it was pushed back to September 25, and that a song featuring "one of [her] fav [sic] artists" would be coming out "sooner than you think".

The next day, February 10, she released the standalone single "Copy Cat", with American rapper and songwriter Tierra Whack.

[7] The song was originally intended to be the lead single from the EP, but was cut from the final track listing.

[citation needed] On September 15, 2020, Martinez posted a surrealist photo on Instagram of her in a nest with two eggs, with a caption reading; "Holdin' onto these eggs till they're ready to be hatched next week", teasing that the EP would be released the next week.