Tips and Tricks on the APMLE Part 1 Exam. The APMLE Part 1 is a fairly difficult exam with an estimated first time test taker pass rate of 85% (Data taken across several randomly selected institutions), lower than the national average for. National Board Dental Examinations (NBDE) Parts I and II are national, prepares students to challenge these examinations as part of their dental curriculum. Tips and Tricks on the…