Babak,
I can empathize with your response to the Rietveld academy. While there is a place for those who have the will and passion to learn classical techniques, they are also something that can be used for surrealist purposes from time to time. Which doesn't change the fact that art schools tend to reinforce the system of oppression and censorship in slightly different ways than other schools..
Of course the attitude of the artism mileu can be suffocating and full of assumptions, class bias, and uncreative snobbery.
When I was in college (again a situation-based period of my life) I had much conflict with poetry workshops due to my habit of bringing in automatic poems and presenting the surrealist perspective.
I'll never forget the day that the Los Angeles Rebellion began. This was triggered by the beating of Rodney King, a black motorist, by several cops, and when those cops were let off the hook by an all white grand jury, people took to the streets in rioting and looting for days, until Bush the First called in the National Guard to quell the uprising... I was in a poetry workshop at the time, and when we heard a protest outside, the class moved outside...but I separated from the class to join the march, and a classmate called to me 'we're workshopping poems!" as I passed them on a large march to the police station.
Good luck with what you decide to do.
Shibek