How does one get into film school after completing an undergrad degree?

I have an undergraduate degree in biology, but I want to go into film rather than med school.

How plausible is it to try to get into a graduate film school in this situation? How difficult or easy is it to get into film school in general? And would film school be a good idea for someone with little to no movie-making experience?

I’m looking to be a screenwriter or producer (but I’m not aiming as high as director just yet). I would also be interested in being a medical/technical advisor for a TV show or movie. Any advice would help.

do a short course – eg two months, in screenwriting or general film production techniques. Get some books on screenwriting and go to Drew’s script-o-rama and download some good scritps and analyse them. a good book is Ray Frensham’ s ‘teach yourself scriptwriting’