When you remove a student from a Class Notebook, they will no longer have permission to view and edit the notebook's shared content. However, their work will remain in the notebook unless you choose to delete it while removing the student.

  1. Sign in to Office.com with the log-in provided by your school.

  2. Select Class Notebook, then Add/Remove Students. 

  3. A Class notebook wizard will display. Select the notebook you’re updating.

  4. Remove student(s) by selecting their name. Select Undo if you choose a student by mistake. If you'd like to delete a student's work while removing them from your class, select the Delete student's content checkbox.

    Open Remove current students list with students' names selected. A checkbox next to a selected student's name says Delete student's content.

  5. Select Next.

  6. Confirm the list of students with access to your Class Notebook. If you need to make changes, select the back arrow to return to the previous screen. 

    A list of students to be removed.

  7. Select Update.

Source: Microsoft