"S-Class" is the title track of the album '★★★★★ (5-STAR),' which earned Stray Kids their third number one spot among their four consecutive number ones on the US Billboard 200 chart.
The song embodies Stray Kids' identity as the "most unique and special among unique kids" and was written and composed by the group's producing team 3RACHA (Bang Chan, Changbin, and Han).
With their third full-length album and the title track "S-Class," Stray Kids topped both the US Billboard 200 and Artist 100 charts for three consecutive releases. They also made it to the UK's Official Albums Chart Top 100 and Official Singles Chart Top 100.