You said you are putting yourself through school. Are you living at home while going to school? If so, are you concerned you will be asked to leave if you attend a film school?

Having a job you enjoy is an integral part of a meaningful life. Having respect for the opinions and advice of a parent is important. Being dictated to complicates matters immensely.

My thought is for you to follow your dream. Be respectful to you mother. Perhaps at some point she will see how important your dream is to you.

Good luck.