Two. I don't know what your teacher's qualifications are, but that is a ridiculous statement. One cannot be levitating from a surface that they are touching. If you so wish, I can scientifically prove so.
I may not be a Harvard graduate, but I'm of an equivalent level to my Physics, Chemistry, and Biology teachers, who happen to have masters or doctors degrees in their field.
So, I will say that it is impossible for someone to levitate in such a way that you have described.