Perhaps part of the reason is bureauratic de facto racism.
In a misguided attempt to address the achievement gap between demographic groups, the Florida Board of Education has issued new guidelines, which accept within policy the premise that blacks will do worse than latinos, who will do worse than whites, who will do worse than orientals. The goal of improving performance is admirable, but the means being outlined here are awful.
Student standards should be uniform across the board, without regard to racial pigeonholing. Students who need remedial help should get it, so they can catch up. They should not be told that the expectations for them will be lower. To present such lowered standards to one racial group or another is to implement the self-fulfilling prophecy.
Stop segregating by tinkering with statistics, and start educating our kids.