Overview
Biography
Publications
Conferences and Workshops
Links
Ask the Grade Doctor
Contact Me
Links
  

 
Ask The Grade Doctor

Full Question Detail

Return to All Questions

Question

Good afternoon and Happy New Year,
Percentage scores are a part of our reality in Saskatchewan. Within our division we are assessing outcomes in some high school classes using a 4 point scale and then converting. We are aiming for as much accuracy and consistency as possible while also trying to make the conversion process efficient for our teachers.
I have read recently in The Art and Science of Teaching and Classroom Assessment and Grading about the differences between simple scales and complete scales. According to Dr. Marzano, when appropriate using a 7 point scale provides more precision. Yet other assessment and grading academics oppose the concept.

What evidence supports whether we should or should not consider allowing our teachers to assign 0.5s when appropriate?

2014-12-29
Randy
 

The
Grade
Doctor
says:

The smaller the number of points on a scale the more consistent teacher judgements are.
I believe we should use scales with somewhere between 2 to 7 levels and speak out
against percentage scales. The best resource on this is Guskey's Sept 2013 Educational
Leadership article "The Case Against Percentage Grades." Happy New Year to you.

 

 

Top