As a teacher, we were saying this twenty years ago, and, in my opinion, it's the first possible reason, that education is not valued by many people in this country. I always recall working in Bradford and being told to be careful about remarks on the reports of Asian pupils as their parents would over-react against their children, especially their sons, if they were thought to be slacking.
Some lucky sod was paid to come up with that report that we all probably knew which gender/race would be worst, and better yet, they've no solution for it! Excellent.