The Description is required as that is the field where the author of the infraction enters the details of the infraction and it is viewable by any user with access. The reason the label text "(for parents' and students' eyes)" was to remind the author and reviewer that is the description parents and students will see when they have view/email access.
Note: text entered in the "Confidential comments (for internal eyes only)" field is NOT viewable by anyone except users with the Conduct Manager role.