Far too often it is racism: I can not tell you how many of my students have been labeled ADHD and they were'nt.
When I first began teaching, I taught at a predominately white school and was given the
"problem" children who were deemed deficit.
All with the exception of one were black, I reviewed their files and it made me sick what they contained. After a certain period my students grades; test scores; and, behavior improved. My co-workers were "amazed" at how well those "problem" students behaved. Whatever.
Do some of these children need to be spanked?Yes. But, does not mean you have slap a label on them because you don't feel like being bothered with them? NO!
Bottom line is that more blacks need to teach. People can not fathom how it difficult it is for a child in a classrom when they have a teacher with those views; their racism is exhibited with the labels.