The situation has improved somewhat since then, but while the blatant racism is gone and the absence of First Nations content after 1900 is gone, I think we may still have the problem with the dancing minority trick and the repetition of the same limited material over and over again.
And now we have another variation of #1, which is the intrusion of native content...the need to get authors to stop ignoring First Nations after 1900 led to Departments of Education having to say, "include First Nations content or else!" to textbook writers, and that was a necessary and good thing, because authors writing about WWII discovered that there were First Nation's heroes in both WWI and WWII worth writing about, once they thought to look. So that worked out. But now that "First Nation's content?" is one of the items on textbook checklists, publishers are sticking it in whether it is relevant or not. So, I'm re-editing a series of biographies on Canadian PMs from another publisher, and in the middle of a discussion of this or that PM, there suddenly appear a couple of pages on native people of that era...and it's just kind of inserted at random. Not, "what was this PM's policies on First Nations?", but just sort of, "Meanwhile, back on the reserve..." What the hey? And of course, these fact pages are the exact same 'facts' as in every other book...creating mind-numbing repetition to turn kids off any possible interest in First Nations. Head:Desk. So nice try, but no cigar.