Indications of serious mental disorder

A 10-year-old boy who seems very intelligent to his parents and teacher is getting very low grades. He is frequently inattentive to the teacher and seems “spaced out.” There is no history of trauma to the head and no indications of serious mental disorder. It is not clear whether his problems occur solely in the classroom or elsewhere, too. The boy and his parents come to you for an assessment.

Discuss and list relevant assessment tools.