"School's Out" is a song first recorded as the title track of Alice Cooper's fifth album. It was released as the album's second single on April 26, 1972. It has been regarded as the band's signature song and reached number 7 on the Billboard Hot 100, number 3 in the Canadian Hot 100, number 2 in Ireland and reached the top of the UK Singles Chart.
Cooper has said he was inspired to write the song when answering the question, "What's the greatest three minutes of your life?". Cooper said: "There's two times during the year. One is Christmas morning, when you're just getting ready to open the presents. The greed factor is right there. The next one is the last three minutes of the last day of school when you're sitting there and it's like a slow fuse burning. I said, 'If we can catch that three minutes in a song, it's going to be so big.'" Cooper has also said it was inspired by a line from a Bowery Boys movie. On his radio show, Nights with Alice Cooper, he joked that the main riff of the song was inspired by a song by Miles Davis. Cooper said that guitarist Glen Buxton created the song's opening riff.