You are looking for sheet music to the song from the Cooley High movie made by Boyz II Men entitled Its so hard to say goodbye to yesterday?

You can find sheet music for "It's So Hard to Say Goodbye to Yesterday" by Boyz II Men through various online music retailers or sheet music platforms such as Musicnotes or Sheet Music Plus. Additionally, local music stores or libraries may have physical copies available. If you're looking for specific arrangements, consider searching for piano, vocal, or guitar tabs to suit your needs.