The following link is an interesting article discussing an alternative view of education and specifically assessment and grading of students. In this particular school, co-founded by actress Tilda Swinton, students are never given grades. It takes much of its philosophy from Steiner education and the article quotes Rudolph Steiner, its founder:
‘To be free is to be capable of thinking one’s own thoughts – not the thoughts merely of the body, or of society, but thoughts generated by one’s deepest, most original, most essential and spiritual self, one’s individuality’
Therefore the school is based heavily on the arts and creative expression, and students spend a lot of time making things on their own, such as wooden boats.