I believe that it's parents responsibility to be the torchbearer of our history.
However, I think that it's important that our students learn the history of our nation, and the cultures within it, in school. Black history is important. However, I think ALL history is important. One of the things I taught my students was the meaning of the Akan symbol the Sankofa. I'm not in favor of having a separated curriculum (I'm not saying that anyone said that we should). I believe that the contributions of African Americans (and Mexican, Asian, and Native Americans) should be incorporated into the American history curriculum. Frankly, the writers of history books are getting better. I taught out of a book entitled, Call to Freedom. One of the authors is a well known African-American scholar. The book is not perfect (uses the term Indian), but it's A WHOLE LOT BETTER than the book I used in 1993-1994.
But, it's not only the responsibility of parents and the writers of textbooks, it's also the responsibility of teachers to deliver the material. Use the textbooks and SUPPLEMENT! But, so many of my former colleagues teach history by only having the students read the book and answer questions at the end of the chapter