Understanding the Traditional GPA Scale

In the United States, academic grading commonly takes on the form of letter grades, often ranging from A+ to F. The typical letter grades awarded for participation in a course are (from highest to lowest) A, B, C, D, and F. Variations on the traditional five-grade system allow for awarding A+, A, A−, B+, B, B−, C+, C, C−, D+, D, D−, and F, with A+ being the highest and F being the lowest. In some cases, grades can also be numerical. This article provides a comprehensive explanation of the traditional GPA scale, its variations, and its significance in academic evaluations.

Traditional Letter Grades and Their Numerical Equivalents

The foundation of the GPA system lies in assigning numerical values to letter grades. Traditionally, these values are as follows:

A = 4 points
B = 3 points
C = 2 points
D = 1 point
F = 0 points

This is the most common GPA scale, where an A typically equals 4.0, and your overall GPA is the average of your class grades.

Variations on the traditional five-grade system allow for awarding A+, A, A−, B+, B, B−, C+, C, C−, D+, D, D−, and F. In many schools, pluses and minuses are added to letter grades to provide a more detailed evaluation. Many schools add .33 for a plus (+) grade and subtract .33 for a minus (−) grade. Thus, a B+ yields a 3.33 whereas an A− yields a 3.67. In some places, .25 or .3 instead of .33 is added for a plus grade and subtracted for a minus grade. Other institutions maintain a mid-grade and award .5 for the grade.

Passing and Failing Grades

In primary and secondary schools, a D is usually the lowest passing grade. However, there are some schools that consider a C the lowest passing grade, so the general standard is that anything below a 60% or 70% is failing, depending on the grading scale. In post-secondary schools, such as colleges and universities, a D is considered to be an unsatisfactory passing grade. Students will usually still earn credit for the class if they get a D.

Read also: A Guide to Scholarships

The 100-Point Scale

The 100-point scale is a percentage-based grading system. In a percentage-based system, each assignment regardless of size, type, or complexity is given a percentage score: four correct answers out of five is a score of 80%. The overall grade for the class is then typically weighted so that the final grade represents a stated proportion of different types of work. For example, daily homework may be counted as 50% of the final grade, chapter quizzes may count for 20%, the comprehensive final exam may count for 20%, and a major project may count for the remaining 10%.

Alternatives to Letter Grading

Alternatives to letter-grading assessments have been tried in some schools, but still remain a marginal approach due to the heavy emphasis and history of letter grading. Alternatives to standard letter grading are able to evaluate the students skills and understanding of the course material. Some institutions either do not issue grades at all (such as Alverno College, Antioch College, Bennington College, Evergreen State College, New College of Florida, and Hampshire College), de-emphasize them (St. John's College, Reed College, Sarah Lawrence College, Prescott College, College of the Atlantic), or do not calculate grade point averages (Brown University). In many cases, narrative evaluations are used as an alternative measurement system.

Special Grades: W, FN, and Auditing

A grade of "W" indicates that a student has elected to withdraw from a course prior to the course's withdraw deadline. It is not calculated in the student's grade point average, which would keep the student from facing possible academic disciplinary action if they were to fall below the required Standards of Academic Progress (SAP). For students receiving financial aid, a grade of "W" may require the student to refund to the college all or part of their aid.

The FN grade indicates that a student has failed a course due to non-attendance. It is calculated as an "F" in the student's grade point average. For students receiving financial aid, failure for non-attendance may require the student to refund to the college all or part of their aid. The FN grade will be assigned by the faculty member at any time following the final withdrawal date for the course.

Students may elect to audit a college credit course or workforce credit course by completing the audit form. Students may not change from credit to audit or from audit to credit after the drop deadline.

Standards of Academic Progress (SAP)

Standards of Academic Progress are the standards set by the school, state, Board of Education, or other agency which are required of students to adhere to in order to continue to attend classes. A student who falls below the SAP may have disciplinary action taken against them or denial of financial aid until the student has met the required SAP. In Florida, Standards of Academic Progress require a student to maintain a grade point average of 2.00 or above on the 4.00 numeric grading scale. The student must also finish 67% of the courses attempted, which includes previous failures, re-takes, and withdrawals.

In addition to GPA and course completion requirements, some institutions include specific benchmarks for individual courses or program components as part of SAP. These may involve maintaining minimum grades in core subjects, meeting credit-hour thresholds each term, or successfully completing remedial coursework if necessary. Schools may also implement probationary periods for students who temporarily fall below SAP standards, providing guidance and academic support to help them regain satisfactory status.

Weighted GPA Systems

Some high schools, to reflect the varying skill required for different course levels, will give higher numerical grades for difficult courses, often referred to as a weighted GPA. Another policy commonly used by 4.0-scale schools is to mimic the eleven-point weighted scale by adding a .33 (one-third of a letter grade) to honors or advanced placement class. Sometimes the 5-based weighing scale is used for AP courses and the 4.6-based scale for honors courses, but often a school will choose one system and apply it universally to all advanced courses.

Alternative Grading Systems

Some school districts use a 1-2-3-4 rating system for grades at the elementary (K-5) level, notably many California school districts including The Los Angeles Unified School District (LAUSD) which switched with the class of 2000. The four-point scale more clearly indicates proficiency levels in core subjects by segmenting students who are proficient (4&3) and ready to advance, from those who are not meeting all required standards (2&1) and should not advance. This system has largely been replaced by the six-point system discussed above, but is still encountered at the elementary school level, particularly in kindergarten and Grades 1 through 3 (these levels comprising the lower division of primary school). There are a multiple permutations and variations to this system. These may include the use of an O (for "outstanding") grade, which is even higher than the E; the use of an O instead of the E; the elimination of a G (for "good"); the use of a G (again for "good") instead of the E; the use of an L (for "lacks effort") instead of a U; and the lack of a U grade. In this version, E stands for "exemplary" and P proficient, with AE and AP for work that approaches the E and P levels.

Recalculating GPA for College Admissions

Colleges may recalculate your GPA based on their own criteria. Some may:

Remove noncore courses (like physical education or electives).
Focus on core subjects (math, science, English, social studies, and world languages).
Adjust or remove weighting assigned to AP or honors to standardize GPAs across applicants, since grading scales vary by school. Some colleges may apply their own weighting system.

Because of these variations, it’s best to ask college admissions offices directly how they evaluate GPA during the application process.

Calculating GPA

To determine your GPA, you add up all the GPA points from your courses and divide them by the number of classes you’ve taken. For example, if you took five classes and earned three A’s (4.0 each), one B (3.0) and one C (2.0): (4.0 + 4.0 + 4.0 + 3.0 + 2.0) ÷ 5 = 3.4 GPA

The Significance of GPA

A student’s high school GPA plays a crucial role in college admissions, providing insight into academic performance and course rigor. Many high schools use different GPA scales, including weighted and unweighted systems, which can sometimes be confusing. An unweighted GPA is calculated on a 4.0 scale, where all classes carry equal weight, regardless of difficulty. In this system, a student taking advanced-level courses like honors classes or AP courses receives the same point value for the letter grade as a student in regular classes. A weighted GPA scale adds extra value to more challenging courses. For instance, an AP class, honors class, or IB course may be graded on a 5.0 scale instead of a 4.0 scale. This system rewards students for taking challenging courses and can result in the highest GPA above 4.0.

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