It is clear to everyone here that you are entering the US to enter flight training.
As this is will be your main objective selfin even posted the text for you.
solely for the purpose of pursuing a full course of study at an established vocational or other recognized nonacademic institution
= Visa.
School I went to made night qual students have visas for this reason - Don't get caught out of status in the states - it's not worth the hassle.