Being in the middle of James Loewens' "Lies My Teacher Told Me: Everything Your High School History Texbook Got Wrong", this resonates with me. In there, textbooks generally reflect the "conservative" ideals that we are a country with a proud history and you should revere it, while Loewens is definitely of the more "liberal" camp that kids should be taught that history is messy and that what actually happened in the past makes us who we are today, not what we think should be the ideal.