Correct me if I’m wrong, but the DSM5 requires struggling in school (well struggle during a young schooling age).
That said, those with many characteristics, me, benefit from understanding why certain things are more difficult and adopting ADHD coping techniques.
Edit: specifically referring to the diagnosis and not identity
Edit: dsm5 for those who are interested https://www.cdc.gov/adhd/diagnosis/index.html#cdc_testing_when_to_tested-dsm-5-criteria-for-adhd
Yes, but all criteria would cause issues in school.
Additionally symptoms must occur in multiple environments. The chances of someone meeting the criteria without struggling in school are very low.
I’ve linked the dsm5 in my comment now, it explains it better (imagine that, haha)