There a racial test score gap?

I agree!

Look at how many people didn't vote for Trump.

Whenever race is mentioned..

High IQ Übermensch here. Only 0.5% of people on earth are more intelligent than me! I'll outsmart y'all!

I have to admit I was sloppy (why spend time?), but you're (also) wrong, because that's not the example or task I postulated.
If we pretend that we can always distinguish two individuals in intelligence, then the answer will be about 83%. (1- 1/6).
The assumption was, that given three individuals of different races, a prejudiced, presumed order of intelligence would turn out be correct. There are 6 different possible orders:
ABC, BAC, CBA, ACB, BCA, CAB.
There is however a complication. That assumes that you can always assign an order of intelligence between two or three people. Well, you can't do that. So given equal probabilities to outcome, you'll have a 93% chance of being wrong (so not 96%).  

The school system is bullshit because as far as i'm aware each public school is funded by local property taxes.

So poor kids go to poor schools, get poor educations, get poor jobs, and live poor lives.

Sounds like unequal opportunity to me. A true meritocracy wouldn't have such a bullshit system in place. A true meritocracy would ensure that all children regardless of socioeconomic status receive the same education.

A lot of people vote democrat and liberal because these candidates usually support programs that help the poor, and other disadvantaged groups like women, gays, and immigrants while the republican and conservative candidates usually want to defund these programs and stand against women, gays, and immigrants. That's the perception anyway.

A lot of poor whites vote republican yet they're still poor. What are these candidates doing for them?

I guess that explains why black americans on average have it so much better in places were the kind democrat overlords rule over them

All of this is just plain wrong.

No, it certainly doesn't look that way. As per Hajnal/Horowitz 2014, from 1948-2010 African-Americans under Democratic presidents on average saw a 2.41 decrease in poverty rate, a .36 drop in unemployment rate, and an increase of $895 in annual salary, while under Republican presidents they saw on average a .15 increase in poverty rate, a .39 increase in unemployment rate, and an increase of $142 in annual salary. They also saw larger decreases on average in arrest rate and the racial gap in arrest rate under Democratic administrations. Shapiro 2016 shows a similar disparity in income growth over a shorter span (from Reagan to Obama). If these figures, taken from census data, are incorrect, you'll have to actually cite something or present some evidence that that is the case, your bare assertion obviously doesn't mean a thing. And that Republicans favor policies like mandatory minimums and voter ID laws that disproportionately harm African-Americans and oppose policies like affirmative action and social programs that disproportionately favor African-Americans is of course an almost trivial piece of public knowledge, not really the sort of thing one can credibly dispute.