Hi, is it true that TOEFL needs to be taken atleast 3 months before the application deadline for the MBA program? and that we have to register atleast three months before taking the test? I read this from the website but I just wanted to confirm as I don't understand why it should take that much time.

I am planning to apply to Columbia University, UCLA and USC all of which require TOEFL scores. Is it possible to write TOEFL now if I want to apply for the Fall 2011 program?

Thanks, much appreciate the help.