A 10-point grading scale gives each letter a 10-percentage-point band — A is 90–100, B is 80–89, and so on down to F below 60. A 7-point scale gives each letter a narrower 7-point band: A is 93–100, B is 85–92, C is 77–84, D is 70–76, and F is anything below 70. The 7-point scale needs a higher score for the same letter, so an 82% is a B on a 10-point scale but a C on a 7-point scale.
The two scales side by side
Both scales use the same five letters and the same 0–100 percentages. The only thing that differs is how wide each letter's band is. A 10-point scale splits the range into even tens. A 7-point scale makes the A, B, C, and D bands seven points wide, which pushes every cutoff higher and leaves no room for a 60s grade at all — on a 7-point scale, 69% is already an F.
The practical gap is the passing line. A 10-point scale lets a student pass with a D at 60%. A 7-point scale sets the lowest passing grade at 70%, so the same 63% that earns a D in one school is a failing F in the other. This is separate from plus and minus grading, which splits a letter into thirds for GPA precision and can sit on top of either base.
| Letter | 10-point scale | 7-point scale |
|---|---|---|
| A | 90–100% | 93–100% |
| B | 80–89% | 85–92% |
| C | 70–79% | 77–84% |
| D | 60–69% | 70–76% |
| F | Below 60% | Below 70% |
Which grades actually change?
Switching scales does not move every grade. A percentage anywhere from 60 to 92 usually lands on a different letter, with two islands that stay put: 77–79% is a C on both scales, and 85–89% is a B on both. Anything 93% or higher is an A either way, and anything below 60% is an F either way. The biggest single effect is the 60–69% band — a hard fail on a 7-point scale, a passing D on a 10-point scale.
So the common borderline questions have clear answers. An 82% is a B on a 10-point scale and a C on a 7-point scale. A 75% is a C on a 10-point scale and a D on a 7-point scale. A 78%, on the other hand, is a C on both — not every borderline grade actually moves. To check a specific score against your own school's cutoffs, use the grade calculator with a custom scale or the percentage-to-letter-grade lookup.
| Percentage | 7-point scale | 10-point scale | Changes? |
|---|---|---|---|
| 93–100% | A | A | No |
| 90–92% | B | A | Yes — B becomes A |
| 85–89% | B | B | No |
| 80–84% | C | B | Yes — C becomes B |
| 77–79% | C | C | No |
| 70–76% | D | C | Yes — D becomes C |
| 60–69% | F | D | Yes — fail becomes a passing D |
| Below 60% | F | F | No |
Why schools switched from 7-point to 10-point
The 7-point scale was long common in the Southeast, and the switch to 10-point was driven by comparison with everyone else. North Carolina moved first, adopting the 10-point scale beginning with the fall 2015 freshman class and phasing it in by grade level. South Carolina followed when its State Board of Education voted unanimously on April 12, 2016 to adopt a 10-point uniform scale for all high-school courses, effective in 2016–17.
The reasoning was the same in both states. Most colleges and most other states read grades on a 10-point scale, so a student on a 7-point scale showed weaker letters for identical work — and that mattered for anything decided by GPA or class rank, including state scholarships, athletic eligibility, and admissions. South Carolina kept its weighting of 0.5 for Honors and 1.0 for AP, IB, and dual-credit courses. The main criticism was the phased rollout, which briefly left students in one classroom on different scales.
Does the scale change your GPA or class rank?
The scale changes which letter a percentage earns, but not what a letter is worth. An A is 4.0 grade points, a B is 3.0, a C is 2.0, a D is 1.0, and an F is 0.0 on both scales. So the effect on GPA is indirect: a 75% that moves from a D to a C is worth one extra grade point on that course, and a 65% that moves from an F to a D goes from 0.0 to 1.0 and also earns the credit instead of losing it.
For a student whose grades sit in the 77–79 or 85–89 ranges, switching scales does nothing at all. For a student with several grades in the bands that move, a district-wide switch can lift a GPA noticeably, which is why class rank is usually recalculated when a state changes over. The letter-grade-to-GPA chart shows each letter's value, and weighted vs unweighted GPA explains how the honors bonus works separately from band width.
Is the 10-point scale easier, or just grade inflation?
Both sides of this argument are fair. A 10-point scale is more forgiving at every border — it hands out a passing D for scores a 7-point scale fails, and it turns low-80s work into a B. Critics call that grade inflation and argue that a 7-point scale keeps A's and B's scarcer, so they carry more information about what a student actually did.
The counter-argument is about consistency. When one school uses a 7-point scale and the school across the county uses a 10-point scale, two students who earned the same 88% get the same letter, but two students who earned the same 82% do not. Colleges recalculate applicant GPAs on their own scale and read each school's profile, so a 7-point transcript is not a penalty by itself — but at a glance, before that recalculation, the raw letters look weaker. A curve is a different tool again: it re-scales a class against its own distribution rather than changing the fixed cutoffs.
Choosing a grading scale for your classroom
If you teach, the first rule is that your school or district policy usually decides this for you, and the grades you enter should match the scale printed on the report card and transcript. Grading to a 7-point scale while the transcript prints on a 10-point one creates borderline disputes that are hard to defend.
Where you do have latitude, such as a single-course syllabus, aligning with the official transcript scale is the low-friction choice: the letter a student sees on an assignment is the letter that will appear on the record, and it matches what colleges expect. Whatever you choose, write the exact cutoffs on the syllabus — including the rounding rule and the passing line — before the first grade is entered. A grade calculator with a custom scale lets you set each letter's minimum once and reuse it.
Frequently Asked Questions
What is the difference between a 10-point and a 7-point grading scale?+
The width of each letter's band. A 10-point scale gives each letter a 10-percentage-point range (A 90–100, B 80–89, and so on). A 7-point scale gives each letter a 7-point range (A 93–100, B 85–92, C 77–84, D 70–76). The 7-point scale requires a higher score for the same letter.
Is an 82 a B or a C?+
An 82% is a B on a 10-point scale, where the B band is 80–89. It is a C on a 7-point scale, where a B starts at 85 and the C band is 77–84. Which one applies depends entirely on your school's stated scale.
Is a 75 a C or a D?+
A 75% is a C on a 10-point scale (the C band is 70–79) and a D on a 7-point scale (the C band starts at 77). A 78%, by contrast, is a C on both scales, so not every grade in this range moves.
Which grades change between the two scales?+
Percentages roughly from 60 to 92, with two exceptions: 77–79% is a C on both scales and 85–89% is a B on both. Anything 93% or above is an A on both, and anything below 60% is an F on both. The 60–69% band changes from a failing F to a passing D.
Why did North Carolina switch to a 10-point scale?+
To stop putting its students at a disadvantage. Most colleges and neighboring states use a 10-point scale, so NC students on a 7-point scale showed weaker letters for the same work when competing for admissions, scholarships, and athletic eligibility. The change began with the fall 2015 freshman class.
When did South Carolina change?+
South Carolina's State Board of Education voted unanimously on April 12, 2016 to adopt a 10-point uniform grading scale for all high-school courses. It took effect in the 2016–17 school year, and the state kept its existing weighting of +0.5 for Honors and +1.0 for AP, IB, and dual-credit courses.
Does a 10-point scale raise your GPA?+
It can, indirectly. The grade-point value of each letter is the same on both scales, but if the switch moves some of your grades up a letter — a 75 from D to C, or a 65 from F to D — those courses earn more grade points, and a failing grade that becomes a D also earns the credit. Grades in the 77–79 or 85–89 ranges are unaffected.
Is the 10-point scale too easy?+
It is more lenient at the borders, which is the basis for the grade-inflation criticism. Supporters point out that a 7-point scale understates a student's record next to peers graded on the 10-point scale that most colleges use, and that the inconsistency between schools is its own kind of unfairness.
Does a 7-point scale hurt college applications?+
Not on its own. Admissions offices recalculate applicant GPAs on a common scale and read each school's profile, which states the grading scale used. The raw letters can look weaker before that recalculation, but the process is designed to account for it.
What is a passing grade on a 7-point scale?+
70%. A 7-point scale has no 60s band — the D range is 70–76%, and 69% and below is an F. On a 10-point scale, by contrast, a D runs 60–69% and 60% passes.
Can a teacher choose their own grading scale?+
Only within school or district policy, which usually sets the scale. Where a teacher has latitude, matching the official transcript scale is the standard advice, because it keeps the letter students see on their work the same as the letter that lands on the record.
Is a 7-point scale the same as plus/minus grading?+
No. Plus/minus grading splits each letter into three narrower bands (B−, B, B+) for GPA precision. The 10-point versus 7-point question is only about how wide each whole-letter band is, and a plus/minus system can be layered on top of either one.
Does a 7-point rubric count as a 7-point grading scale?+
No. A rubric scored out of 7 points is converted to a percentage first — 5 out of 7 is about 71% — and then read against whatever grading scale the course uses. See how to convert a rubric score to a grade for that step.
Muhammd Salman
I build and maintain Grade Calculator independently. Every worked example on this site is checked against the underlying formula, with notes on where school or instructor policy can change the result. More about this site →