If you have ever reviewed the US Citizenship Test, I think you must acknowledge that the facts tested there are indeed facts.  How many Supreme Court Justices there are or the difference between the three branches of government aren't exactly controversial issues.  Who wrote the Declaration of Independence?  What is the capital of the US?  Who was President during the Great Depression and WWII? Name an American Indian Tribe.  Why do some States have more Representatives than other States?  If these are too tough for you, there are study guides.  Even phone applications for the kids to use.  If a foreigner with English as a second language can pass these tests, even an Oregon teacher should be able to pass on the information if the students are actually in his/her class.  If they can't, that might explain the Oregon abysmal graduation rates.