If you do not already have something in place to document your meeting with a parent/guardian regarding a student's self-injurious behavior this is a great product to start with.
It gives you a check list of topics to cover in the meeting to help a tense situation become meaningful and productive:
The Presenting Concern
School Based Mental Health
School Based Interventions
Home Based Interventions
The second page allows the space to put in emergency supports as well as local crisis lines. It also gives a space for signatures for those present at the meeting. You can then copy the paper and give the family the copy.