So what is that proven proficiency? I understand the principles of computer adaptive testing. But I know there is also a percentage, b/c my instructor mentioned one, I just don't remember the number. Between 70 and 80%. I know that, through your responses, the NR has to feel 95% sure you are competent in all areas.NREMT exams don't work that way. It's a progressive exam where the difficulty of your next question is based off of whether you got the previous question right or wrong. Once you've reached a certain level of proven proficiency in all of the topics or reached a point where it is impossible to reach it, the exam shuts off automatically.