It's funny, but law school doesn't seem to offer "ethics" even as an elective.
It's actually a required course and there is a separate "Ethics Bar Exam" that is required in many states. The problem is that teaching ethics is VERY different from teaching someone to be ethical. Frankly, if you have the personal ethics of a Rudy Giuliani or Syndey Powell, no amount of classes or exams will make you act ethically.