If you are unsure of the specific documentation required for excused absences, it is best to check with your school's administration or attendance office. They can provide you with the most up-to-date information on the required documentation and procedures.
In general, it is always a good idea to provide documentation for any absences, even if they are excused. This can help to prevent any confusion or misunderstandings about the reason for your absence and ensure that your attendance record is accurate.