What is North grading scale?

There's no standardized "North grading scale." Grading scales vary significantly by school, district, state, and even country. To understand a specific "North" grading scale, you'd need to know which school, district, or institution using the term "North" is being referenced. For example, it might be:

* A specific school named "North" High School or something similar: Their grading scale would be found in their student handbook or on their website.

* A region called "North": Even within a region called "North," grading scales would vary widely between different schools.

To find the grading scale, you need to specify the context.