It is not easy to get members of the general public to appreciate the importance of the arts in the society, but it is possible if you are patient and if you use the right strategies.
You can, for instance, run mass media adverts, aimed at educating people about the importance of the arts in the society. These can be adverts on the TV or on the radio. Through these ads, you can get to a point where parents can be comfortable with the idea of their kids taking arts courses at university.
You can also set up a website containing information aimed at educating members of the general public about the importance of the arts in the society, and then publicize it heavily. The people who visit it can then spread the information they learn through it, hence creating societal awareness.
You can, at yet another level, create a newsletter with information aimed at educating people about the importance of the arts in the society, and then get people to subscribe for it. The email would probably have to be distributed through email. To that end, you can, for instance, follow the instructions at whatisymail.org to create a Yahoo Mail account which can subsequently be helpful to you as you try to distribute your newsletter.