YAPPY! SCHOOL CARNIVAL☆彡

 is a song by Hello, Happy World!

It was the song released in commemoration of the band winning the Japanese server's 1st Girls Band Election held from June 12, 2017, to June 19, 2017.

It is one of the coupling tracks for their 2nd single, Goka! Gokai!? Phantom Thief!. It was released on February 14, 2018.

It was one of challenge songs for the event Welcome To Eve's Home Party.

It was written by Oda Asuka, and arranged and composed by Fujima Hitoshi.