I'm having to translate my CV into German for a funding application, and I need help figuring out how to call my American high school diploma. We just say "high school diploma", but I think diploma has different implications in Germany (i.e. it is considered a third-level qualification, not secondary). My partner (a German) has indicated that Abitur is not the same thing and should not be used because it doesn't really imply the same qualification.
How would you put your completion of an American high school diploma on a German CV?