There’s no fixed route to becoming a film editor, so there’s no one go-to college degree you can do that will guarantee you a job. Some film editors will have educational qualifications, and others will have worked their way up from other roles in the film industry - like runners. Jobs are far more likely to rely on your level of experience and your connections to the industry rather than your qualifications.
That said, many film editors will earn a Bachelor of Arts with a major in film and television, film studies, or another area within communications. Some may also major in cinematography, and it’s extremely useful to know how to work film equipment and understand camera angles and frame sizes when you’re entering the industry.
Generally, film editors will gain their qualifications from independent film schools, photographic institutes, community colleges, technical schools, or traditional universities. Some film editors will take a more vocational route, opting for internships or work experience placements instead. One thing is for sure though, the more experience you can build, the better your chances of landing that dream job.