Your perspective of the research is different from mine, therefore continuation of the topic is futile.
It's been interesting talking with you! I enjoyed the discussion!
Reading the whole damn thing when I should be working on my Euro paper,
Gender bias and racial bias is VERY present in the world. If I get an A, some a$$hole says it's because I'm asian. As faulty said, black people people generally don't do well in school. A lot of them do, but most of them don't. I'd say the black people at my school the highest ranked black person is somewhere around top 40%. I'm not saying there can't be a black person who does well in school.
I'm going to digress here, but about the term African-American. It is incredibly incorrect and it's used by people who think black sounds racist. If black is racist, then white is racist as well. And the only thing African about them is their skin color. When Africans first came to America, then they could have been called African-American. 200 years in America has allowed them to develop their own rich culture. That culture may borrow from African culture, but their culture is American. Not African. Asian Americans retain their Asian culture (whether it be Chinese, Japanese, or Korean. Or white-washed, but that's a different story). Black people have no retention of their African heritage. And so it would be incorrect to call them African-American. It's almost degrading. Black culture has a rich heritage and their story is one of freedom and equality.
ANYWAY, the reason black people are poorer than whites is because of the influences they grow up in. Asians succeed in school because their parents expect them to get nothing but As. An Asian parent who doesn't is somewhat uncommon. The opposite is true for Black parents. There are black parents who push their kids to get As. But most black parents will be more than satisfied if their kid gets a B.
Kevjumba's grading scale.
If you're white, C is average, B is better, A is awesome.
If you're Asian, A is average, B is bad, C is crap, D is dead meat, and F is F***ed
Now for gender bias. If a teacher has math phobia, they will convey the message that math is hard. I don't think gender has anything to do with that; both boys and girls will suffer in math from having a teacher who is not good at math. The only way they won't suffer is if the kid is already better at math than his/her teacher (me in 5th grade. My 5th grade teacher was horrible at math.)
Now for gender bias. I have no idea whether some teachers think that girls aren't as good at math. Now if we can assume this to be true, then girls will definitely suffer. Expectations are huge. Failing to meet expectations is incredibly humiliating. Meeting expectations is satisfying. Exceeding expectations is gratifying.
Studies have shown that kids that teachers think are not as smart as some of their peers will not be as successful in school. The difference is how the teacher interacts. It's subtle and the teacher might not even realize it. But what happens is that if a teacher asks a question to a kid that he/she thinks is smart and the kid answers wrong, then the teacher will help the kid eventually reach the right answer, because he/she thinks that the student has the right idea but not quite. Now if she asks a question to a kid with the exact same intelligence, but the teacher feels the student isn't so smart, and the kid gets it wrong, the teacher will think oh well, he/she doesn't know the answer and move on to another kid. The kid loses out on a valuable learning experience. Multiply by the 180 days of the year and consider the exponential nature of learning. Teacher thinks he/she is being fair, but in reality it's incredibly detrimental.
If this is happening with girls, it's a serious issue.