Before submitting your portfolio, you must select the program of study within CalArts that you want to apply to - each program has specific admission guidelines and may have a different set of requirements.
CalArts is looking for personal work that gives them a sense of who you are as an artist, rather than technical exercises (i.e. do not include generic class assignments, figure/life drawing, still life drawings) unless you believe they offer a view of a personal and/or unique approach. Some sketches and works-in-progress are acceptable. Drawings or paintings created digitally are accepted, however if your practice has physical elements it is to your advantage to also include a selection of work done directly with physical materials or methods. Applicants with multiple interests are encouraged to submit a variety of mediums.