You're scaring the poor lambs, Jayimess. I had a prof last semester who sits on the MFA screenwriting selection committee, and he said the USC MFA SW program receives "as many as 400" applications for any given year. If we assume "normal" is about 350, that's an acceptance rate of a bit higher than 9%.
That sounds low, I know--but one has to imagine that at least half of those applications are the rather un-serious submissions of daydreamers, not well-prepared packages by folks serious about starting a career.
UCLA's MFA SW submission rate is, I understand, about the same as USC's. AFI's is higher--they say they get "nearly 100" SW applications a year, and I believe they accept 28.
--IA