On September 30, 2010, Taewoon made his debut as a member of Coed School with the release of their digital single "Too Late", followed by their second digital single "Bbiribbom Bberibbom" three weeks later.
Pada 30 September 2010, Taewoon memulai debutnya sebagai anggota dari Co-Ed School dengan perilisan singel digital mereka "Too Late", diikuti dengan singel digital kedua mereka "Bbiribbom Bberibbom" tiga minggu kemudian.