How to Score a Test

To score a test, count the points the student earned, divide that by the total points possible, and multiply by 100 to get a percentage. For example, 42 correct points out of 50 is 42 divided by 50, which is 0.84, or 84%. Once you have the percentage you can map it to a letter grade with your grading scale. That single calculation is the core of scoring any test, whether it has ten questions or a hundred.

The percentage is only the first step. Real tests mix question types, give some items more weight than others, and need a fair way to turn the final number into a grade students understand. This guide walks through the math, then the judgment calls: weighting, curving, and choosing a scale. If you build your test with an online test maker, much of this is calculated for you, but knowing the method means you can check the result and explain it.

How do you calculate a test score as a percentage?

Divide the points earned by the points possible, then multiply by 100. If a student earns 38 points on a 45 point test, the math is 38 divided by 45, which is 0.844, or 84% when rounded. Always score on points rather than the number of questions when items are worth different amounts, because a test with twenty questions can still total 50 points if some are worth more than others. The percentage gives you a number that compares fairly across tests of any length.

How do I convert a test score to a letter grade?

Match the percentage to a grading scale, which is the table that says which range earns which letter. The most common US scale is 90 to 100 for an A, 80 to 89 for a B, 70 to 79 for a C, 60 to 69 for a D, and below 60 for an F. So an 84% lands in the B range. Decide your scale before you grade, post it so students know it in advance, and apply it the same way to every paper. Some schools add plus and minus bands, such as 87 to 89 for a B plus, which you can layer on top of the basic ranges.

How do I score a test with different point values per question?

Add up the points each item is actually worth rather than counting questions. Give every question a point value when you write the test, total those values to get the points possible, then total the points the student earned. A test might have ten multiple choice questions worth 2 points each and two short answer questions worth 5 points each, for 30 points possible. If a student earns 24 of those, the score is 24 divided by 30, or 80%. Weighting harder items more heavily rewards the thinking they require.

How do I score a multiple choice test quickly?

Use an answer key and mark each question right or wrong, since multiple choice items are either correct or not. Count the correct answers, multiply by the points per question, and divide by the total to get the percentage. An answer key makes this fast, and a generated quiz already includes one. If you create the test with a multiple choice quiz maker, the correct answers are marked for you, so scoring a stack of papers is mostly counting against the key rather than deciding each answer on the spot.

How do I curve a test score?

Curving adjusts scores upward when a test was harder than intended, and the simplest method is to add a fixed number of points to every student. If the top score was 92 out of 100, you might add 8 points to everyone so the highest becomes 100, which shifts the whole class up by the same amount. Another approach sets the class average to a target grade and adjusts from there. Curve only when the scores show the test, not the studying, was the problem, and tell students you did it so the grades stay transparent.

What percentage is a passing score on a test?

In most US schools 60% is the lowest passing grade, so anything below that fails, though many courses and certifications set the bar higher at 70% or even 80%. The right cutoff depends on the stakes: a low risk practice quiz can pass at 60%, while a safety or licensing exam often requires 80% or more because the cost of not knowing the material is high. Decide the passing score based on what mastery should look like for that material. There is more detail in this guide to how to set a passing score.

Should I give partial credit?

Give partial credit on questions where a student can be partly right, such as short answer, essay or multi step problems, and score those against a short rubric that lists what each point rewards. Multiple choice and true or false items are all or nothing, so they do not need partial credit. The key is consistency: write down what earns each point before you start grading, then apply that rubric to every paper the same way. Partial credit makes a test fairer when the answer is not simply right or wrong, but only if the rule is set in advance.

How does a test score count toward the final grade?

A single test score becomes part of the course grade through weighting, where each category of work counts for a set share of the total. If tests are worth 40% of the grade, quizzes 20%, homework 20% and a final 20%, you average the scores within each category, multiply each average by its weight, and add the results. So a student averaging 85% on tests contributes 0.40 times 85, which is 34 points, toward the final percentage. Set these weights at the start of the term and keep them visible, because they tell students how much one test actually moves their grade and where to focus their effort.

How do I make scoring easier next time?

Build the test so the answer key and point values exist before anyone takes it. When you generate a test from your own material, each question comes with the correct answer marked and you can set point values as you edit, which removes the slowest part of grading. Turn a reading or chapter into a graded PDF to test, or build the whole assessment in the online test maker so the key is ready the moment papers come back. For the marking workflow itself, this walkthrough of how to grade a quiz covers the step by step process.