The criteria are mostly there to let you diagnose the condition in children, and one thing that children in general are consistently expected to do is attend and perform tasks for school. However, characteristics like forgetfulness, short attention span, losing objects easily, or inability to follow long trains of thought as in a conversation can certainly exist in adults and cause various general-purpose functionality weaknesses.
Those criteria sound like not being compliant to the desires of people in authority.
The criteria are mostly there to let you diagnose the condition in children, and one thing that children in general are consistently expected to do is attend and perform tasks for school. However, characteristics like forgetfulness, short attention span, losing objects easily, or inability to follow long trains of thought as in a conversation can certainly exist in adults and cause various general-purpose functionality weaknesses.