Is it possible to change from visitor visa to F1 while still in US?

Question

Is it possible to change from visitor visa to F1 while still in US?

Answer 1

It is possible, but is not always advisable.  Also, to enter as a tourist and then change status to F-1 quickly implies that that was your plan when you boarded the airplane.  This could trigger a visa fraud investigation that might result in both a refusal of the change of status and even a cancellation of your tourist visa and a refusal to let you re-enter for a long time.

Answer 2

Technically, yes.

But as observed, this might look like you were not a genuine visitor.

To alleviate your concerns, it is allowable to enter the US as a B2 visitor with the intent to find a school. This is an allowable "purpse" for a visitor.