Why is the 1944-1950 German democide/genocide/forced migration ignored?
But it isn't. I just finished The Dark Room by Rachel Seiffert, which is three short stories set in Germany near the end and just after the fall of Berlin. The main characters aren't directly involved in the forced migrations, but it is mentioned. Leon Uris and James Michener also writes about it. There are a number of other scholarly works.
Here's one you might like.
You don't really have time to go over it in your ninth grade world history class because they are expected to take you from the conquest of South Egypt by Menes some 5200 years ago through the fall of communism and beyond. It's a lot to cover. They don't mention ethnic German dislocations, but then they don't mention the Rape of Nanjing either, do they? You have American history in another class, but that's of course only History as it relates to the United States. From that point of view, the Marshall Plan and the rise of anti-communist paranoia is more economically relevant to the history of the US than the migrations, forced and free, after world war 2.
In University, you get more options. For example, Millersville University offers a history course, label HIST 224, called Modern Germany which begins around 1806 after napoleon swept through and collected little states into bigger ones and goes all the way through to the fall of the Berlin Wall and beyond. In that course there's at least one lecture devoted to the contraction of German borders in 1945 and the herding of Germans like cattle into locked boxcars and former Nazi concentration camps for resettlement within the new borders of Germany. Best of all, the instructor's name is Kevorkian, although I've never asked her if she is related to Doctor Death. There's another one, HIST 342, called Hitler and Nazism, which surveys the origins and impact of National Socialist theory. I'm told that the the forced migrations which resulted after the war get more attention in that class.
So I don't think the migrations are ignored. It's not as sexy a topic as the Communism, Nazis, the trans-atlantic slave trade, and terrorism are, but there are plenty of books and lectures on the subject so you can get your fill.
