Keep this journal separate from your personal diary. Ask them not to spread the information. If the first person you tell doesn't respond adequately, note that information in your journal and tell someone else. Use school or company procedures to file a complaint. If you are not satisfied with the results, file a complaint with Office for Civil Rights in your region or the Equal Employment Opportunity Commission.
Harassment can be hard to report.
Take thorough notes about the student's experience. Advise the student about your school's Title IX coordinator or other employee designated to receive complaints about harassment. Explain the grievance procedures to the student, then follow the established procedures. Review your school's policy or ask a supervisor if necessary. Inform the student of outside agencies that can assist if the complaint is not resolved satisfactorily.