Hitting on the same points as my previous post, Rick Wormeli wrote recently in Larry Ferlazzo’s Education Week Teacher column,

“Grades are first and foremost communication; they are information, nothing more. The moment we make them something more, we corrupt their constructive use.”

And,

“The grade is NOT the reward, nor can it ever be considered such. Once a grade becomes a bartering tool, its power to inform stake-holders and be used to make instructional decisions or document progress accurately is impugned.”

Wormeli goes on to list “non-negotiable elements” of grading systems.  This is seriously worth a read.