I.R.A.C. is an analytical way to organize a legal argument.
*I*ssue (or a legal problem) *R*ule (black letter law) *A*nalysis/Application (applying the rule to the facts) and *C*onclusion (deciding if the legal problem will be satisfied by the law or not).
You will use IRAC when briefing, outlining and writing exam responses both in law school and on the Bar Examination. It is vital that you understand IRAC and be able to analyze fact patterns under this format.
Click here for an example of IRAC. Keep in mind that IRAC may differ depending on course or professor.