The US education system is inconsistent, so you can't really generalize. I love America, but I'm also aware of its flaws and don't have any illusions about it being perfect or anything like that. I was also taught plenty of material about the darker sides of American history: slavery, mistreatment of natives, etc. Similarly I learned a lot about 'family health', science, etc. However some schools might lean more towards non-scientific teachings or leave out unsavory material depending on what school you inspect.
Your tone makes me wonder if you're German; having studied German for many years, we learned about how Germany has somewhat of a complex around country pride given certain historical events. My school system had people from over a hundred countries and love for your country was almost universal, including to the extent of wearing clothing with the national flag on it like some Americans do