The 4.0 scale is more accurate and helps to differentiate better than the 100-point scale because it makes distortion and errors less likely. The 100-point scale is an average based method to determine a grade, and therefore relies on calculating a grade to sometimes even tenths of a point, which doesn’t really reflect mastery at all. When using the 4.0 scale, a rubric is the guide in determining the grade, and while rubrics take a lot of time and effort to make, they become easier the more you do them. Rubric-based grading also forces students to focus more on the goals and the objectives of their learning rather than the difference between an A- and a B+. This also helps students to figure out what they still need to learn and how to improve. If they see their current level of mastery circled and explain in clear terms, they can begin to understand what to work on and what to work towards. I really feel that rubric-based grading on the 4.0 scale is much better than the 100-point scale, and I will implement in my classroom whenever I can. It is far more important for my students to see objectives and expectations clearly spelled out for them and be graded on those than to have their grades based on calculated averages that translate into an almost meaningless lettering system.
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