Blackboard grade calculator

How does Blackboard calculate your overall grade?

Your instructor picks a calculation type on Blackboard’s Overall Grade page, and that choice decides the math. Anthology, which makes Blackboard Learn, lists three types:

Your instructor also decides what counts. An item left out of the calculation takes its points out of the total. An exempted item leaves your total too, so your points possible can differ from a classmate’s. Anthology notes that an exemption “will remove the corresponding max number of points the assessment is worth from the max possible points in the course for that student.”

Sources, checked October 2026: Anthology’s Overall Grade Column and Grant Item-Level Accommodations and Exemptions.

What is the difference between Proportionally and Equally?

A weighted overall grade asks how to weigh gradable items within a category. Proportionally adds up the raw points in the category and divides by the points possible, so a 100-point exam moves the category more than a 10-point quiz. Equally turns each item into a percentage first and averages the percentages, so every item counts the same.

Blackboard’s own average example uses three scores: 8/10, 3/5 and 2/2. Here is the same category both ways:

The 3/5 counts for a third of the category under Equally but only 5 of 17 points under Proportionally. If your syllabus says every quiz counts the same, the course is probably set to Equally.

Sources, checked October 2026: Anthology’s Total Calculation Column and, for the average example, Calculate Grades (Original course view).

Why does ungraded work change my Blackboard grade?

Blackboard’s overall grade is “a calculated tally of all the items you grade and post,” so work that has not been graded and posted does not count yet. In a weighted grade, a category with nothing graded drops out and the weights of the other categories are scaled up to 100%. The Original course view calls this a running total and shows the difference with three categories:

As a running total, only A and B count: (36 + 30) × 100/80 = 82.5%. Counting the empty category as 0 gives (36 + 30 + 0) × 100/100 = 66%.

The calculator shows the running total by default. Tick “Count ungraded work as 0” to see the second number. That is also what happens when your instructor turns on automatic zeros, which Blackboard assigns to past-due work. Students with a due date accommodation are not affected, and an exempted item is never given an automatic zero.

Sources, checked October 2026: Anthology’s Overall Grade Column, Calculate Grades (running totals), Gradebook Settings (automatic zeros) and exemptions.

How does drop lowest work in Blackboard?

Each category in the overall grade has calculation rules. Drop Scores removes a number of the highest or lowest grades in the category. Use only removes every grade except the single highest or lowest score. Both apply inside one category, so put the quizzes you want dropped from in the same category.

Anthology’s help does not say how Blackboard picks the “lowest” grade when items in a category have different point values. This calculator drops the lowest percentage, always keeps at least one score, and marks the item it dropped in the gradebook above. If your Grades page drops a different item, your course ranks them another way, and you can enter the scores without the drop rule and leave that item out yourself. To copy Use only, set Drop lowest or Drop highest to one fewer than the number of items.

Source, checked October 2026: Anthology’s Overall Grade Column (Edit calculation rules).

Does extra credit count in a weighted Blackboard grade?

Blackboard’s documented way to give extra credit is a gradebook item with a maximum score of 0 that is included in the overall grade. Points added there raise your total without raising the points possible. In Anthology’s example, full credit on 100 points plus 6 extra credit points is 106 out of 100 points, or 106%.

Anthology adds a limit: “This method works for only one individual extra credit column where grades aren’t weighted.” In a weighted grade, instructors put the extra credit item and the category it belongs to into a total calculation (Anthology’s example is a Tests Total column) and weight that column instead. In the calculator, an item “out of 0” counts as extra credit in Points mode. In Weighted mode it is left out, with a note, because the result depends on how your instructor built that column.

Sources, checked October 2026: Anthology’s Extra Credit in Overall Grade Column and Extra Credit when Weighting Grades.

A worked example from Blackboard’s help

Anthology’s weighted example has four tests worth 15% each and a final exam worth 40%. The tests have different point values, so each score becomes a percentage before the weight is applied.

The weighted percentages add up to 0.7925, a 79.25% overall grade. To check it here, choose Weighted and enter each test as its own category with its weight. The same example turns the result into points: the column is worth 4.5 + 4.5 + 9 + 9 + 40 = 67 weighted points, and 0.7925 × 67 = 53.0975 points.

Source, checked October 2026: Anthology’s Total Calculation Column (Example of Weighted Column).

Why your Blackboard grade might not match

• A grade is not posted yet. The overall grade counts items your instructor grades and posts.
• You are exempt from an item. Its points leave your total, so your points possible are lower than a classmate’s.
• Automatic zeros are on. Past-due work counts as 0 until you submit it. Tick “Count ungraded work as 0” for those items, or type 0.
• Your instructor overrode the overall grade. Blackboard shows a message at the top of your Overall Grade panel when this happens.
• The course uses an Advanced formula. No calculator can match a custom formula without seeing it.
• Weights do not add up to 100%. In Ultra, the Overall Grade page balances the weights to 100% for your instructor. The Original course view lets an instructor save weights under 100% and spreads the difference across the columns. This calculator scales the weights you enter in proportion, so enter the percentages your Overall Grade panel shows.
• The number sits on a letter cutoff. Blackboard calculates to 15 decimal places and, in the Original course view, cuts the display off after the fifth decimal instead of rounding up. Letters come from the unrounded value, and your school sets the default letter schema.

Sources, checked October 2026: Anthology’s Course Grades (student help), How Decimals Appear in Grades and Grading Schemas.

Blackboard grade calculator FAQ

Using a different learning platform? Try the D2L Brightspace grade calculator, the Moodle grade calculator or the Canvas grade calculator. For a single exam, the final grade calculator works out the score you need, and the other free tools cover GPA and test grades.

Sources

• Anthology, Overall Grade Column (Blackboard instructor help). Calculation types, Proportionally and Equally, Drop Scores and Use only. Checked October 2026.
• Anthology, Total Calculation Column. The weighted example (79.25%, 53.0975 points). Checked October 2026.
• Anthology, Calculate Grades (Original course view). Total, average and weighted columns, running totals (82.5% and 66%). Checked October 2026.
• Anthology, Extra Credit in Overall Grade Column and Extra Credit when Weighting Grades. Checked October 2026.
• Anthology, Grant Item-Level Accommodations and Exemptions and Gradebook Settings (automatic zeros). Checked October 2026.
• Anthology, How Decimals Appear in Grades and Grading Schemas. Checked October 2026.
• Anthology, Course Grades (Blackboard student help). Where students see the overall grade. Checked October 2026.