Grading system change debated: Will city’s method make difference?

Joe Smydo:

David Chard, dean of the Simmons School of Education and Human Development at Southern Methodist University in Dallas, says there’s little difference between most grading scales.
“It’s like Celsius and Fahrenheit. It’s exactly the same thing,” he said.
Bob Schaeffer, public education director for the advocacy group FairTest, said a debate over grading scales often reveals the “tyranny of false precision.”
“These numbers were not handed down by God on a stone tablet,” he said.
To Robert Marzano, a Denver-based education researcher, the typical grading scale is an incomplete measure of student achievement. He recommends bar graphs measuring student achievement on various course topics.
As officials in the Pittsburgh Public Schools prepare to drop a controversial grading scale for a 5-point scale they’re calling fairer and more accurate, Dr. Chard, Dr. Marzano and Mr. Schaeffer cautioned that no version is perfect.
All require some degree of teacher subjectivity, and all require careful, thoughtful application, Dr. Chard said.
Mr. Schaeffer said grading scale controversies generate “much more heat than light,” yet Dallas and Fairfax, Va., also are in the midst of them now.
Dr. Marzano said as many as 3,000 schools or districts have made some of the improvements he favors, such as expanded report cards with bar graphs breaking down student achievement at the topic level while still giving overall course averages and letter grades. He said the bar graphs can correspond to five-point scales measuring achievement in the topic areas.

The Madison School District’s move toward “Standards Based” report cards has not been without some controversy.