District and school grading policies establish a set amount that is required for the final or cumulative exam as well as for other assessments and assignments. The national grading practices also offer guidelines and it can depend on the grade level and credit type of the course as well. Usually the higher the course is then the assessments tend to weigh heavier than practice. Middle school versus high school classes may have different weight settings as well. Consistency is key across all grade levels and subject matter. What is done for online courses or in person courses need to also have consistency.

Each individual teacher can set this up. This can be set up for an individual or a class, so ask the teacher.