Helping "Those Kids"

When a child is falling behind is school, the first thing I do is assume is that I am dealing with a person who is a bit different from the norm; a person who is having trouble coping with an establishment which does not nurture or even recognize his unique gifts, but instead

"Those Kids"

By now most teachers have their class running pretty smoothly-- except for “those kids”.  What about “those kids”?  Perhaps he refuses to do his assignments, she might sit with a dreamy look on her face, he wiggles incessantly and plays with things in his desk, she talks constantly no matter where you put her, and what about the quiet boy who doesn’t want to go out at recess? As a teacher you want to help each child, but how? Nothing seems to be working.