School Counselors are often afraid to work with children who self-mutilate. Gaining a better understanding of self-mutilation may assist counselors and school administrators in developing more effective and efficient ways to address the problem. Here is little bit of information that may be helpful in addressing the counselor's role in helping children who self-harm.
https://www.counseling.org/resources/library/ACA%20Digests/ACAPCD-18.pdf