The case against school grades

http://www.slate.com/articles/double_x/doublex/2013/05/the_case_against_grades_they_lower_self_esteem_discourage_creativity_and.html

" It's becoming increasingly clear that the rigid and judgmental foundation of modern education is the origin point for many of our worst qualities, making it harder for many to learn because of its negative reinforcement, encouraging those who do well to gradually favor the reward of an A over the discovery of new ways of thinking, and reinforcing harsh class divides that are only getting worse as the economy idles.

A 2002 study at the University of Michigan found that 80 percent of students surveyed based their self-worth on academic performance—more than cited family support as a source of self-esteem. A 2006 study at King’s College showed adolescents with low self-esteem were more likely to have poor health, be involved in criminal behavior, and earn less than their peers.  Since it’s overwhelmingly poor students who are prone to bad grades, a self-reinforcing loop is created. Poverty leads to bad grades and low self-esteem, which leads to more poverty and social dysfunction."

I agree.  School should be about how to be inquisitive, a good researcher, and to prepare you for being a functional adult.  You don't need grades for that.