How to grade a stack of tests consistently

1. Freeze the grading rules before you begin

Start with the answer key and the written grading policy. Record the total possible points, the value of each item, any accepted alternatives, the smallest partial-credit increment, the rounding rule, and every letter-grade cutoff. If a question has several parts, decide whether those parts earn independent points or one combined score.

Avoid changing the total to make a particular paper fit a desired result. If an item must be removed for everyone, update the total once and recalculate every paper under that same decision. The calculator handles the arithmetic; it cannot decide which assessment policy is fair for your class.

2. Use the first few papers as a consistency check

Grade a small sample before settling into the full stack. When an unexpected but reasonable answer appears, pause and decide how it should be treated. Write that decision beside the key, then apply it to every later paper. If the decision also affects a paper already graded, place that paper in a recheck group.

In GradCal stack mode, enter the total once and tap only the deductions. Saving a paper resets the deduction counter but keeps the assignment settings. The session list uses Paper 1, Paper 2, and so on, which is enough to inspect the math without creating a second student roster.

3. Make partial credit visible and repeatable

Partial credit should come from the rubric rather than from the final percentage you hope to produce. If a two-point response earns one point for the correct method and one for the correct answer, record those parts explicitly. Use half or quarter points only when the rubric supports them.

Partial points change the numerator of the grade formula. A paper earning 17.5 points out of 20 is calculated as 17.5 ÷ 20 × 100, or 87.5%. The easy grader table can generate every whole-, half-, or quarter-point outcome for the same total.

4. Check the scores that sit near a boundary

Boundary papers deserve a deliberate verification because rounding and letter lookup can change the label. GradCal first calculates the raw percentage, then applies the selected rounding mode, then assigns the letter grade. Under a scale where A starts at 90, an exact 89.96 remains below A; rounded to one decimal it becomes 90.0 and reaches A.

Use the grading scale calculator to match the written cutoffs. Do not assume that every school uses 90/80/70/60, and do not mix exact grading with rounded grading inside the same stack.

5. Worked example: a 20-point quiz

These labels use GradCal’s default scale only. If your policy starts A at 93 or caps extra credit at 100%, change the inputs or apply that policy explicitly. A transparent disagreement is safer than a calculator silently guessing the rule.

6. Finish with reconciliation, not just an average

Before transferring results, compare the number of saved papers with the physical stack. Recheck any papers set aside after a rubric decision. Spot-check the highest score, the lowest score, and every score close to a letter boundary by entering points earned in one-score mode.

An anonymous CSV is a calculation handoff, not an official student record. It contains paper sequence, earned points, possible points, percentage, and letter label. Keep the mapping to student identity in the school-approved system rather than adding names to setup labels or filenames.

For the exact order of operations and invalid-input behavior, read how GradCal calculates grades. When categories such as tests and homework contribute different shares to a course, use the separate weighted grade calculator.

Common grading-workflow questions