D GPA
A D letter grade equals a 1.0 GPA on the standard 4.0 scale and a percentage of 65–66%. It is the lowest passing grade in the U.S. grading system — just above a failing F.
GPA Scale — Letter Grade Conversions
| Letter Grade | Percentage | 4.0 GPA Scale |
|---|---|---|
| A+ | 97-100% | 4.0 |
| A | 93-96% | 4.0 |
| A- | 90-92% | 3.7 |
| B+ | 87-89% | 3.3 |
| B | 83-86% | 3.0 |
| B- | 80-82% | 2.7 |
| C+ | 77-79% | 2.3 |
| C | 73-76% | 2.0 |
| C- | 70-72% | 1.7 |
| D+ | 67-69% | 1.3 |
| D | 65-66% | 1.0 ← You Are Here |
| F | Below 65% | 0.0 |
What Is a D Grade?
A D is the eleventh letter grade in the U.S. grading system and the lowest passing grade on the standard scale. It represents a score of 65–66% and earns exactly 1.0 grade point on the standard 4.0 scale. A D is technically a pass — you earn the credit hours — but it is the minimum possible passing outcome. A consistent D average produces a 1.0 GPA, which is a full point below the 2.0 institutional minimum at most colleges, placing you firmly in academic probation or dismissal territory. At the D level, the question is not just whether you passed — it is whether your degree is still on track and whether your enrollment is still secure.
Is a D a Good Grade?
A D is the lowest possible passing grade — it is not a good grade by any standard. It earns 1.0 grade points, sits 2.0 points below the national average of 3.0, and produces a cumulative GPA that falls below the academic good standing floor at most institutions. A D also typically does not satisfy major or program requirements, meaning even though it technically passes, many courses with a D grade will need to be retaken. The realistic interpretation of a D grade: you cleared the absolute minimum bar, but the course almost certainly needs to be repeated for degree progress purposes.
D Grade for High School Students
In high school, a D average produces a 1.0 GPA — the lowest named GPA on the standard scale. This is well below what most four-year colleges require for admission, and in many states it falls below the minimum cumulative GPA required for a standard high school diploma. The first priority for a high school student with a D average is confirming graduation eligibility with their counselor. The second priority is building a realistic plan forward, which for most students at this level means community college as an entry point to higher education rather than a direct four-year application.
D Grade for College Students
In college, a D grade is a serious academic crisis signal. A single D in an otherwise average semester pulls the semester GPA down significantly. Multiple D grades will push a cumulative GPA below 2.0 within one to two terms, triggering academic probation, financial aid suspension, and the possibility of academic suspension or dismissal. Most programs also require minimum grades of C in core and major courses, so D grades often do not count toward degree requirements even when credit is technically awarded. The most urgent action for a college student receiving D grades is to meet with an academic advisor before the semester ends to understand the institutional status and available options.
What Is a 65 or 66 in Letter Grade?
Both 65% and 66% fall within the D range on the standard U.S. grading scale, which covers 65–66%. Both earn 1.0 grade points. A 64% falls below the D range at most schools and results in a failing grade (F, 0.0 points). A 67% crosses into the D+ range (1.3 points). The narrow 65–66% window of the D grade is the thinnest range on the entire grading scale — just two percentage points separate passing from failing at the bottom end.
Frequently Asked Questions — D Grade
A D earns 1.0 grade point on the standard 4.0 GPA scale — the lowest possible passing GPA value. A student with all D grades in equal-credit courses will have a cumulative GPA of exactly 1.0, which is a full point below the 2.0 academic good standing threshold at most U.S. colleges. For a reference on how D grades are formally defined within U.S. grading systems, this U.S. grading system reference provides useful context.
A D corresponds to a percentage of 65–66% on the standard U.S. grading scale. It is the narrowest range on the entire scale — only two percentage points wide. A 64% typically results in a failing F (0.0 points), and a 67% rises to a D+ (1.3 points). The 64% to 65% boundary is the most critical single-point threshold on the scale, separating a passing grade from a failing one.
A 65% is a D on the standard U.S. grading scale, which covers 65–66%. It earns 1.0 grade points — the minimum passing value on the 4.0 scale. A 64% typically falls below the passing threshold and earns an F (0.0 points) at most institutions, making the 64% to 65% line the most consequential single percentage point in the entire grading system.
A D technically passes at the credit level — you earn the credit hours and do not fail the course outright. However, a D almost never satisfies major, program, or prerequisite requirements, which typically require a minimum grade of C. This means a D grade often results in a course that must be retaken for degree progress, even though it technically passed. Some programs and graduate school prerequisites also require a C or better, making D grades essentially non-transferable for those pathways.
A 66% is a D on the standard U.S. grading scale, which covers 65–66%. It earns 1.0 grade points. A 67% rises to a D+ (1.3 points), and a 64% typically earns a failing F. A 66% is the highest score that still earns only a D — one more percentage point at 67% would be a D+ and worth an additional 0.3 GPA points per course.