Grade Calculation

Grade calculation

How do 17 separate grades in 3 categories become one overall grade? This article shows the whole calculation — every step explained, with examples and special cases.

The calculation

ClassCheck calculates the overall grade in 5 steps:

1 Grades → normalize to percent

Every grading system is brought onto one percent scale through the grade conversion.

2 Average per category

Inside each category, the simple average of all columns is calculated.

3 Weighted average across categories

The category averages are combined by their percentage weights.

4 Apply deductions

If counter columns are set up as deductions, they are subtracted from the result.

5 Percent → convert back to a grade

The final percent average is turned into an overall grade using the grade boundaries.

Grade conversion

Different grading systems use different scales. To make them comparable, ClassCheck converts every value to a percentage.

Standard conversion (grades 1–5):

Grade	Percent value
1 (Very good)	100%
2 (Good)	83%
3 (Satisfactory)	68%
4 (Sufficient)	56%
5 (Insufficient)	25%

Why 25% and not 0%?

A five is counted as 25%, not as 0%. That stops one poor grade from pulling the whole average down out of proportion.

Example: A student with 3× grade 1 and 1× grade 5 would average 75% (grade 3) if the five were 0%, but 81% (grade 2) if it is 25% — which reflects the work more fairly.

+/~/− system: + = 100%, ~ = 68%, − = 25%

These values can be changed in Settings.

Grade boundaries

After the percent average is calculated, the grade boundaries decide which overall grade is shown.

Overall grade	From percent
1 (Very good)	≥ 90%
2 (Good)	≥ 75%
3 (Satisfactory)	≥ 60%
4 (Sufficient)	≥ 50%
5 (Insufficient)	< 50%

“Pass from” threshold: 50% is the standard line for a passing grade. Anything below is a fail (grade 5).

These boundaries can also be changed in Settings.

Full example

Student: Maria, subject: mathematics

Category weighting:

Classwork: 30%
Tests: 30%
Class tests: 40%

Step 1 — normalization:

Column	System	Value	→ Percent
Classwork Oct	+/~/−	+	100%
Classwork Nov	+/~/−	~	68%
Test 1	1–5	2	83%
Test 2	1–5	3	68%
Class test 1	Points /40	32	80%
Class test 2	1–5	2	83%

Step 2 — average per category:

Classwork: (100% + 68%) ÷ 2 = 84%
Tests: (83% + 68%) ÷ 2 = 75.5%
Class tests: (80% + 83%) ÷ 2 = 81.5%

Step 3 — weighted average:

84% × 0.3 + 75.5% × 0.3 + 81.5% × 0.4 = 25.2% + 22.65% + 32.6% = 80.45%

Step 4 — deductions:

No deductions set → 80.45%

Step 5 — overall grade:

80.45% ≥ 75% → grade 2 (Good)

Points color scale

For columns that use the “Points” grading system, cells are colored:

Percent	Color	Meaning
≥ 80%	Green	Very good
≥ 60%	Yellow	Satisfactory
≥ 40%	Orange	Sufficient
< 40%	Red	Insufficient

Successes

A success column belongs to a category. Each success is its own grade value at the percentage you set on the column (0 to 100). Zero successes add nothing, even when empty cells in other columns count as a neutral value.

Example, category classwork: two classwork columns at 50% each and three successes at 100% each.

(100 + 100 + 100 + 50 + 50) ÷ 5 = 80%

A classmate with no success stays at (50 + 50) ÷ 2 = 50%.

An incident that is counted at 25% stays its own value of 25% and is not a success. In the parent PDF the success column appears in the grade list as count times symbol, and the individual entries below that under “Successes”. Incidents are listed under “Incidents”. How you set the symbol: Grading systems, successes.

Empty cells

For each column you can decide whether cells that were not graded (empty) count toward the average:

As the neutral default: The empty cell counts at a percentage. Default for new accounts: 55%. You change the value in Settings; it then applies to every column set up that way.
Ignore: Only filled cells count. Typical for written exams that are not entered yet, or when only the minuses you actually gave should count.

In the parent PDF a cell like that says “present, unremarkable”. Under it, a sentence: the child was there, did not stand out that day either positively or negatively, and for classwork that counts as neither a plus nor a minus.