Teachers using and exploring Standards Based Grading (SBG) or Standards Based Assessment and Reporting (SBAR) form quite a community on the Web. We face similar problems and there is a lot of cooperation and sharing about solutions to these issues.
This is a collection of some of the stuff I have found on the web. The ones here are especially related to teachers describing their version of SBG and the reasons for adopting a Standard based assessment philosophy. I have also included links with more general critiques on Grading practices and justification for SBG. Clicking on the links of my Blogroll you will find other good resources about SBG.
The Racing Tortoise