When I was in high school, during black history month we got a week (if that of black history) and the rest of the month was about the holocaust. My history teacher junior year was Jewish, so during a game we played for a continent take over (he never told us the countries until after we were done) I ended up making all the moves of Germany and united with and Italian kid and took over Europe.
Normally I'd say the most trollishly outrageous thing that popped into my head, but this time I'll defer and say yes, it needs to change. To categorize black America literature or science as such is to alienate or bastardize all of our accomplishments as less than "American". It also serves as a way to "white wash" history, thereby allowing educators and pupils to choose the amount of non-white/ western european history that they are willing to digest. It consciously or unconsciously allows people to avoid the contributions of our melting pot that they don't find palatable.
I agree that the coverage of black history should change and be incorporated into regular history classes in high school, but it should not be just history class. In my high school, we rarely covered any black writers and literature in English class and the one book they did offer was summer reading and it was optional. I 'don't necessarily know if its a deliberate agenda or if its a "it's always been like this" and they are slow to change. I'm unsure how other high schools work, but I can only guess that incorporating history of black and other ethnic groups into American history would go against just feeding information to the kids where open decision of communication & debate is minimal.
Fuck yeah it should be changed. We need more stories. Everybody know Betsy Ross Cracker ass did not stitch that Flag. We know Eli Whitney did not create that shit. Also we need a random Cracker ass, Cracker.