K–12 (pronounced "K through 12") is the second studio album and a soundtrack album by American singer Melanie Martinez. It was released with an accompanying film of the same name on September 6, 2019, through Atlantic Records. Martinez played the main character, "Cry Baby", in this film that she wrote and directed. An alternative pop, dark pop, and art pop album, K–12 peaked at number three on the US Billboard 200. No singles preceded the album, but two promotional singles "High School Sweethearts" and "Strawberry Shortcake" were released prior to the album. The deluxe extended play (EP) After School was released a next year.