How Are School Tests Graded?

Behind every grade on a school test is a set of decisions the teacher made about how to measure student learning. Understanding those decisions — rubrics, point systems, curves, and weighted grades — helps you interpret your child’s scores more accurately.

Points-Based Grading

The most common method for classroom tests is straightforward point scoring. Each question is worth a set number of points, and the raw score (number of points earned) is divided by the total possible points to get a percentage. A student who earns 42 out of 50 points receives an 84%.

From there, the teacher applies a grading scale. Most schools use something close to:

Some schools use a 7-point scale (A starts at 93%) or a 10-point scale (A starts at 90%). Check your school’s student handbook or grading policy for the exact scale used.

Rubric-Based Grading

For essays, projects, oral presentations, and lab reports, teachers often use a rubric — a scoring guide that describes performance levels for specific criteria. A writing rubric might evaluate organization, use of evidence, grammar, and argument strength separately, each on a 1–4 scale.

Rubrics reduce subjectivity and give students a clear target before they begin. If your child receives a rubric-graded assignment back with a low score, ask them to show you the rubric alongside the comments — it will tell you exactly where points were lost and what “better” would have looked like.

Grade Curves

When a test is more difficult than expected and scores are broadly low, a teacher may apply a curve. There are several common methods:

• Flat addition: Add a set number of points (e.g., +5) to every score.
• Scale to highest score: The highest score becomes 100%, and all others are adjusted proportionally.
• Square root curve: Take the square root of each raw score (as a percentage) and multiply by 10. A 64% becomes an 80%.

Not all teachers or schools permit curving. If you see a surprisingly high grade on a test your child said was very hard, a curve may explain it.

Weighted Grades

In middle and high school especially, teachers often assign different weights to different types of assessments. For example:

• Tests and quizzes: 60%
• Homework: 20%
• Projects: 20%

This means a single major test can have an outsized effect on the overall grade. See What Your Child’s Grade Actually Means for more on interpreting those numbers in context.

Standards-Based Grading

Some schools, particularly at the elementary level, have moved away from letter grades toward standards-based grading. Instead of a single letter, a report card lists specific learning standards (e.g., “Reads fluently at grade level”) and rates the child’s mastery on a scale such as:

• 4 — Exceeds standard
• 3 — Meets standard
• 2 — Approaching standard
• 1 — Below standard

If your child’s school uses standards-based grading, the teacher can tell you which specific standards your child is below grade-level on, which is far more actionable than a letter grade alone.