Can a US resident become a citizen without taking the test if she graduated from high school?

Answer 1

It depends on your current age and the age at which you entered the USA. If you were in the US most of your life and in US schools most of your life then, NO you do not have to take the test. I do not know the cut-off age though.

Answer 2

Citizenship is a "you are or you aren't" with no gray areas. If your status is resident - permanent or otherwise - but not citizen, then you'll have to take the tests and meet the qualifications of citizenship.

That said, it sounds like you were raised here, which raises the possibility of you having existing citizenship without knowing it.

As your legal status here seems certain, you should be able to contact ICE and describe your situation and see what you need to do. If anything.

Or, if you are understandably reticent about contacting them, you may seek advice from an Immigration attorney in your area, or an immigrant's aid group.