What Duolingo score do you need for LSU New Orleans?

The undergraduate page states the split directly: minimum 100 for undergraduates and 105 for graduate school applicants. It adds that the proficiency score, video interview and writing sample are shared with LSU New Orleans when you send results, and that certified results are available within 48 hours of the test session. Neither page gives a validity period or subscore rule.

For comparison, the undergraduate page and the Graduate School page both set IELTS at 6.5.

The Graduate School page describes conditional admission in which English proficiency, if not provided with the application, is required before full admission and before an I-20 is issued. Neither page describes an ESL pathway. Undergraduates can also meet the requirement with prior credit in a regionally accredited college-level English course.

Requirements vary by programme and change between admissions cycles. The score that binds you is the one on your LSU New Orleans programme page and in your offer letter, so check it there before you book a test.