You incorrect in calling them Native place names.  Willamette, Siuslaw, Modoc and Mohawk are tribal names.  As far as inaccurate stereotypes, these were done many of them a hundred years ago when people actually knew or remembered the tribes that they named the schools after.  Not some Jonny come a hundred years to lately that needs a waaaaambulance if someone calls them a name.  Buck up Buttercup you may get some cajones some day.