What Duolingo score do you need for the University of Alabama in Huntsville?

Both pages say UAH only accepts English proficiency scores taken within two years of when the application was submitted. The window is counted to your application date, not your start date. Both levels set Duolingo subscore floors, so check every subscore on your report.

The graduate page mentions separate deadlines for Graduate Teaching Assistantship and Graduate Research Assistantship consideration, but gives no separate Duolingo level for those roles.

Compared with IELTS: undergraduates need IELTS 5.5 (no subscore below 5.5) or Duolingo 95, and graduate applicants IELTS 6.0 (no subscore below 6.0) or Duolingo 110.

The graduate page also accepts completion of the highest level of a CEA-accredited English language programme. For undergraduates, the undergraduate page says an IELTS 5.5 with one subscore between 5.0 and 5.5 is evaluated individually; it gives no matching flexibility for Duolingo.

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