One of the things that you must realize is that most counseling that occurs in the school setting relates to how the social emotional is affecting the student academic performance. For a student who has counseling as part of their IEP goals, the counseling is geared toward identifying triggers that may get in the way of the student being successful in the classroom and coming up with coping mechanisms /behavior strategies that will help the student be successful in class.
High school counselors are not responsible for therapy in the counseling sessions because there are simply not enough resources in the school to do this. many high school counselors have easily 300 students on their caseloads. In this case, students who have mandated counseling as part of their IEP are the priority. Of course counselors step in when a child is in crisis, but they can not provide on going therapy sessions for students in the school setting.
This is usually referred to outside counselors or if there is a school based clinic, students are referred to the psychologist at the school clinic.