It is important to understand that a foreign-born visitor with a B-2 visa is not
permitted to enroll in a course of study at any U.S. public school or vocational school without first obtaining an F-1 or M-1
student visa.
Furthermore, the student may only attend an INS approved school
您應該看看這個資料
http://www.mhtl.com/pdf/educationalertimmigrationlaw.pdf