Once you are at this point you have a number of things to consider when looking at schools. There are a limited number of film schools in the United States, and looking at the top ten most notable of them is your best bet. A great school means a lot both for your education and on your resume, and you will see that the majority of filmmakers that went to film school went to one of the top ten.
This means that if you are looking more towards California you should consider the University of Southern California, The American Film Institute, University of California Los Angeles, and the California Institute of the Arts. If would rather head east then that leaves mainly New York University and Columbia University. All of these schools are the best of the best and their standards of admission are very high, so it is important to take a little time after undergraduate graduation and fine tune you resume and portfolio. Try doing a little work in a related industry for a short time and make sure you have a production-based internship under your belt.
Though these schools tend to be the first thoughts in film schools there are a few others that are still top of the line and will be great platforms for jumping into the industry. Loyola Marymount is also one of the top film programs, and is well known for having a parallel focus on screenwriting. The Rochester Institute of Technology's School of Film and Animation is incredibly notable, has great professional success for graduates, a high focus on technical skills, and good resources. Chapman University may have the best film facilities of any film school in the country. Florida State, University of Texas at Austin, and the Broadcast Cinema program at the Art Center College of Design are also worth checking out.