S2 Q&A: Should I just take Duolingo to be safe?

If you have no US degree and no MOI letter, yes - Duolingo is our usual recommendation because it's faster and cheaper than TOEFL or IELTS, and most partner schools accept it (I'll confirm [School] in the Library before you book). If you do have a waiver route, skip the test and save the money. Which applies to you?