Final answer:
For an adolescent with Major Depressive Disorder, collaboration with the school counselor by a mental health counselor is crucial for comprehensive care, leading to more effective treatment outcomes.
Step-by-step explanation:
When treating an adolescent who has a diagnosis of Major Depressive Disorder, a mental health counselor should consider obtaining consent to collaborate with the school counselor. Coordination of care is essential for effective treatment of depression, which may include psychotherapy, pharmacotherapy with antidepressant medications, and other interventions tailored to the adolescent's needs. Collaborating with a school counselor can provide a more comprehensive support system, considering that the school environment plays a significant role in an adolescent's life and can impact their mental health.