I can always appreciate a good argument/counter-argument article. This one describes the peaks and pits of standards-based grading. It would be a good text for teams to examine before they transition to this type of grading.
This persuasive piece helps explain 7 "pros" to this type of grading. It's a great piece if you (or a team member) are on the fence about this method. It argues that changing your grading system is a small part of a larger reform in the way we view assessment and measuring success.