the questions are based on the aba model rules of professional conduct and the aba model code of judicial conduct, as well as controlling constitutional decisions and generally accepted principles established in leading federal and state cases and in procedural and evidentiary rules (courtesy american bar association website and national conference of bar examiners mpre website). state rules and laws which may or may not differ from the aba rules are not tested. california uses the mpre even though it is the only jurisdiction that has not adopted either of the two sets of professional responsibility rules proposed by the american bar association – and california rules differ from the aba rules in many ways.