columbia student here.
i'm not a full ride recipient but it is my understanding is that a couple of other folks in the program folks are.
someone asked about interviews...i believe they interview in batches, my interview back in the day was smack dab in the middle of march if that's helpful for anyone.
producers, screenwriters, and directors all take the same classes year one, with the producers splitting off in year two.
directors and screenwriters continue taking the same classes in year two, then declare a concentration in Directing, Screenwriting, or TV Writing at the end of that year. However, there is little functional distinction between tv writing and screenwriting...
hope that helps.