IRAC and CREAC are the two structures every 1L is handed, usually in different rooms and without anyone explaining how they relate. The relationship is simple: they are the same skeleton, rule then application, dressed for two different audiences. IRAC, issue, rule, application, conclusion, is built for exams, where a grader who knows the law is hunting for points at speed.

CREAC, conclusion, rule, explanation, application, conclusion, is built for memos and briefs, where a supervising attorney or judge wants the answer first and proof that the rule is real. Pick by audience and the confusion disappears.

The two differences that matter

First, where the answer goes. IRAC opens with a question because the exam grader is following your reasoning to award points along the way.

CREAC opens with the answer because legal readers are busy and read to confirm, not to discover: the client can likely be served by publication, and here is why. Same analysis, inverted for a reader who may stop after the first sentence.

Second, the E. Explanation is the section IRAC does not have, and it exists because of what the reader does not know. An exam grader wrote the rule; they need you to state it, not prove it.

A memo reader needs the rule established from authority: what the cases collectively hold, how the rule has actually operated on facts like yours, which is rule synthesis, the craft at the center of Legal Research and Writing. On an exam, a paragraph explaining precedent is time you cannot bill to the rubric. In a memo, a rule asserted without explanation is an unsupported claim.

Side by side on one issue

The question: was a contract formed when the store refused to honor its one dollar coat advertisement?

IRAC, exam version: The issue is whether the ad was an offer the customer accepted by arriving first. Ads are generally invitations to deal, but a clear, definite, explicit ad leaving nothing to negotiate is an offer.

Here the ad stated quantity, price, and manner of acceptance, so nothing remained open, and the customer performed the requested act; the store's argument that ads are never offers fails against that specificity. A contract was likely formed.

CREAC, memo version: A court will likely find that a contract was formed. Advertisements are ordinarily invitations to negotiate rather than offers, but an advertisement that is clear, definite, and explicit and leaves nothing open for negotiation constitutes an offer. Courts applying this rule have found offers where ads specified quantity and the act constituting acceptance, and mere invitations where terms remained open; the distinction has turned on whether a reader could close the deal by performance alone.

Here, the advertisement specified one coat, one dollar, first come first served, terms as complete as those courts have enforced, and Chen closed the deal by performing exactly the act requested. Because nothing remained for negotiation, the ad was an offer, and a contract was formed when Chen arrived first.

Same rule, same facts, same result. The memo version leads with the answer, proves the rule from how courts have used it, and closes the loop. The exam version frames the fight and gets to the facts a paragraph sooner.

Which one, when

Law school exams: IRAC, always, whatever your professor calls it, since the point structure of an issue spotter is the IRAC structure; the full method is in the IRAC method. LRW memos and briefs: CREAC or your professor's house variant, followed exactly, because in that course the structure is itself graded.

Bar exam performance tasks: CREAC shaped, answer first, authorities explained, since they simulate memo work from a closed file. Practice: CREAC's answer first habit, permanently, because no supervising attorney in your career will ever ask you to build suspense.

You will also meet the variants, TREAC, CRuPAC, CRAC, and the correct response is calm: every one is the same skeleton with sections renamed or split. Learn the moves, rule stated, rule proved when the reader needs proof, facts applied, conclusion committed, and every acronym your professors prefer becomes a dialect you already speak.

FAQ

Can I use CREAC on a law school exam?

Structurally yes, leading with your conclusion costs nothing and some graders like it. What you must drop is the E: proving rules from precedent spends exam minutes on points the rubric does not contain. State, apply, conclude, move.

My LRW professor uses a different acronym. Should I worry?

No. Follow their version to the letter in their course, because there the format is the assignment. The underlying moves are identical across every variant, and fluency in one is fluency in all.

Why does the conclusion appear twice in CREAC?

The opening conclusion serves the busy reader who needs the answer now; the closing one confirms the analysis delivered it. In a multi issue memo, those bookends are also how a reader navigates, which is why skipping the final C makes a section feel unfinished.

Written by Ali, Georgetown Law, founder of Lovare Institut.

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