IRAC vs FIRAC vs CREAC: Which Case Brief Format Should a 1L Use?
Every 1L legal-writing syllabus lists a different acronym. Some professors swear by IRAC, some by CREAC, some by FIRAC or TREAT. The differences are small but real — and picking the right one for the job matters more than picking the 'best' one.
The three formats at a glance
- IRAC — Issue, Rule, Analysis, Conclusion. The classic. Best for exam answers where the facts are given.
- FIRAC — Facts, Issue, Rule, Analysis, Conclusion. IRAC with a facts section on top. Best for reading briefs, where you extract facts from an opinion.
- CREAC — Conclusion, Rule, Explanation, Application, Conclusion. Best for legal memos and appellate briefs, where you lead with the answer and then justify it.
When each format wins
Use FIRAC for reading briefs
When you're studying an assigned case, the facts are the whole point — they anchor every other section. Skip them and you can't reconstruct the reasoning. FIRAC is the safest default for 1L casebook reading.
Use IRAC on exams
On a law-school essay exam, the fact pattern is given. You don't restate every fact; you spot issues and apply rules. Adding a full Facts section wastes time and points. Straight IRAC per issue is what most graders expect.
Use CREAC in memos and briefs
A legal memo is written for a busy reader. Leading with the conclusion respects their time. CREAC also forces you to separate Rule Explanation (what the law is) from Application (what it means for your facts), which produces cleaner memos than IRAC.
If your professor teaches TREAT, or CRuPAC, or their own five-letter acronym, use theirs. Formats are conventions. Graders reward the convention they taught.
The one mistake every format shares
None of these frameworks help you if you conflate Rule and Analysis. The Rule paragraph is the abstract principle — the sentence that would still be true if the facts were different. The Analysis paragraph is where you apply that principle to the specific facts in front of you. Keep them in separate paragraphs, always.
A concrete IRAC vs FIRAC comparison
For Hadley v. Baxendale, a FIRAC brief opens with the mill-shaft facts. An IRAC exam answer for a Hadley-adjacent hypo skips straight to the issue — the facts are already in the prompt. Same case, different format, because the audience is different.
Where Scriba fits in
Scriba's brief editor uses FIRAC by default because it's built for reading briefs. If your professor wants IRAC or CREAC, you can rename the sections and drop the Facts pane — the underlying anchors and AI grounding don't change.
Frequently asked
For casebook briefs, FIRAC or IRAC is standard. For legal-writing memos, CREAC is the modern default. Always check your syllabus and rubric first.
Yes — use FIRAC for your reading briefs and CREAC on the graded memo for the same class. Different tools for different jobs.
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