At least they do in U.S. schools:
Although black students made up only 18 percent of those enrolled in the schools sampled, they accounted for 35 percent of those suspended once, 46 percent of those suspended more than once and 39 percent of all expulsions … Over all, black students were three and a half times as likely to be suspended or expelled than their white peers. …
Black and Hispanic students — particularly those with disabilities — are also disproportionately subject to seclusion or restraints. Students with disabilities make up 12 percent of the student body, but 70 percent of those subject to physical restraints. Black students with disabilities constituted 21 percent of the total, but 44 percent of those with disabilities subject to mechanical restraints, like being strapped down. And while Hispanics made up 21 percent of the students without disabilities, they accounted for 42 percent of those without disabilities who were placed in seclusion. (source, source)
What are the reasons for these differences in discipline rates? I guess it can only be one of two things: either black students are particularly unruly, or many teachers are prejudiced. Racists will obviously adopt the former explanation: in their minds, racial discrepancies in discipline are not evidence of racism but rather evidence of the inferiority of the black race. Let’s assume for a moment that teachers do not treat black pupils unjustly and that those pupils deserve their treatment on account of their behavior: we should probably not assume this, but even if we do this would not necessarily be evidence of racial inferiority. There may still be background discrimination. Why do black kids behave the way they do – if they do indeed behave in ways that deserve harsher discipline? Could it not be because of racism elsewhere in society?
More posts in this series are here.