It is hard to avoid reading about standards based grading. I have even tried it out for half a semester in my physics class this semester. I liked the switch from conversations about point to conversations about physics, instead of students asking how can I get more credit I really did get questions like how can I add a mathematical model to my project? The hardest part for me was writing the standards. Here is an interesting article from a Chemistry Professor with a very clear and concise explanation of how he has added standards to his class, using one of my favorites Blooms Taxonomy. I found this link from a wonderful physics blog.