Many, many times.
But we still like to help.
For the vast majority of colleges, yes. HS level completed is equivalent to HS years studied. I do wish colleges would be more explicit about this topic on their websites. Claremont McKenna is one that does spell it out:
http://www.cmc.edu/admission/apply/secondary-school-preparation
If you still have doubts, ask the colleges in which you are interested.