We don't give grades... because we give more descriptive feedback. I think it would be interesting to see of we notice any increase in learning since we switched - or if kids' attitudes/beliefs about learning changed.
I think standards-based grading has increased teacher understanding of learning outcomes and allowed more flexibility in designing learning experiences and assessment.
From Chip. Your growth depends on your ability to pull value from criticism in spite of your natural responses and on your willingness to seek out even more advice and coaching from bosses, peers, and subordinates. They may be good or bad at providing it, or they may have little time for it-but you are the most important factor in your own development. If you're determined to learn from whatever feedback you get, no one can stop you.