This scale is used in colleges, where the best grade a student can receive is an A (5), and the student can also receive a B (4), C (3), D (2) or an F (1). Actually it is not clear what these letters (nubmers) mean, so a clarification is in order. Some poeople and institutions will mean different things when they grade something a B. At WasyaCo this grading scale has the following meaning.

• A 5/5 - perfect, cannot be better. Or, positively surprising. Higher quality than negotiated, may deserve a bonus.
• B 4/5 - better than average, but has flaws or can be obviously improved.
• C 3/5 - acceptable. This is the passing grade. This is the common grade, nothing is wrong with receiving a C. We work hard to create acceptable outcomes. Unless higher quality is specifically required/requrested, acceptable quality, grade C, is a successful finish of a production process.
• D 2/5 - unacceptable. This is the common not-accepted grade, meaning the production process has not been finished, and the deliverable has to be changed to be accepted.
• F 1/5 - unacceptable. Rarely used. Used when work has not been attempted at all. If this rating is given to a vendor, it may result in termination of the contract with this vendor.

The plus and minus modifiers: A+, C-, can be used to further distinguish quality within the same grade. This is often subjective, or driven by cultural considerations. Eg: someone "deserves" a higher grade, even if the letter of the grade should not be changed.