In USA; grades are used report

to measure a student's academic performance. Grades are typically given in the form of letters, such as A, B, C, D, and F, with A being the highest and F indicating failure. These grades are assigned based on a student's performance on assignments, tests, projects, and participation in class.

Grades serve as a way for teachers to evaluate a student's understanding of the material and their ability to apply it. They also provide feedback to students and their parents about their progress and areas for improvement. Grades are often used to determine eligibility for certain programs, scholarships, and college admissions.

In addition to letter grades, some schools also use a numerical grading scale, such as a 0-100 scale, where higher numbers indicate better performance. These numerical grades are often converted into letter grades for reporting purposes.

Grades are typically reported on report cards, which are issued at regular intervals throughout the school year, such as quarterly or semesterly. These report cards provide a summary of a student's grades in each subject or course, along with any additional comments or feedback from teachers.

Overall, grades in the USA are an important tool for assessing and communicating a student's academic performance and progress.