I tried to answer your question, and I couldn't come up with anything. I know this isn't "helpful" so feel free to take away points, I don't really care. I just felt the need to tell you.. you stumped me! You bring up a really good point!

All I know is how to mark art GCSE. First off, research is meant to be done, and you get points for that. Then the techniques you use that you have learnt can also add some points. The actual art itself cannot be marked down. WHat really gets you the marks however, is stating your inspiration, how that art came to be, how it is presented and effects the audience etc. etc. But that is just art GCSE

If you are not demonstrating the skill that the teacher has been tryiong to get you to master, then yes, then an art teacher has right to grade you wrong. That is what the grade is based off of, and if it's not clearly evident, you are marked down. If you don't see a reason, then ask the teacher, and I'm sure they will point out what ever you did not do or didn't do correctly. It's not like the art teacher thinks "This has got to be the ugliest piece of 'art' I have ever seen! F!" There is usually a decent reason to go along with it.

Art is not "all about view and perspective" if it was then Primitives like Grandma Moses would not be considered as art. An art teacher can provide you with guidence as to appropriate material for a class and grade you on your technique and abilities. What they cannot do is say that what you produce is not art. Art is in the eye of the beholder.

The fact that it's about view and perspective does not mean that there are no criteria for quality. This is a difficult subject, because there are lots of tangles the mind can get into along the way. A great artist IS better than a poor artist, and yes, art is very subjective. If you say that there's no difference between great art and poor art, then every child's fingerpaint scribbling belongs in the Louvre -- clearly a nonsensical stance. At the same time, if you say that art can be judged objectively by fixed criteria independent of subjective responses, that's also clearly impossible. So what gives? The subject itself is very involved. One way to look at it is to consider art as a means of communication, where the depth, subtlety, and skill with which the message is sent is the measure of quality, and that measure cannot be conducted in a "vacuum" -- things like shared culture and history with the receiver of the message provide the background context which allows for the message to be interpreted. So that's a lot to say in a short burst, and it's not the whole subject, certainly. But assessing the quality of art requires subjectivity, but is not arbitrary. Therein lies the teachers ability to grade your work "poor", while simultaneously proclaiming that art is about view and perspective.

Art may be about view and perspective, but what the teacher grades is not your view and perspective in and of itself, but how well you convey and express it. Even if you have a good sense of perspective and understanding of the subject, it is still possible for the art to end up "Bad" if you do not have a mastery of your teqnique. Art (Or at least the kind of art you do for an art class) is about expression and communication, and that can be measured in terms of quality, based apon how well your art conveys your inspiration and views to other people.

With a work of abstract art are one from your mined I dont see how thay could say its wrong except for your tecniques being out of order are preformed wrong. Haveing said that if you are drawing a realistic still life and your elipes are off, angles are wrong, colors could be mixed incorectly ect. then that would be wrong. If you want to have something off are use other colors as an artist you can but it has to be intentional and for a reason not just an excuse for poor tecnique.

Few art teachers will be able to appreciate any art production. They have learned themselves to recognized what is supposed to be good art, but a part of subjectivity still remains. However, an artist who has been working for a long time will appreciate art differently. View is essential in the visual arts. Perspective is just a technique for some particular kind of representation. If you want to learn standard perspective, it is possible to evaluate if your result follows those laws of perspective or not. In this case, your work could be considered as wrong if it was supposed to be an exercise in standard perspective. However, from the point of view of a non academical kind of perspective, it could be interesting. But this is not what they want to see in some art schools.