grade
A score that shows how well you did in schoolwork.
When you're in school, your grade is the level you're in based on your age and how many years you've been studying. A typical elementary school student might be in third grade or fifth grade. Each grade often represents a year of learning, and as you move up through the grades, the work gets more challenging and builds on what you learned before.
The word also means a score that shows how well you did on an assignment or test. Teachers give grades like A, B, C, or percentages like 95% to show whether you mastered the material, did okay, or need more practice. Your grade on a math test tells you how many problems you got right.
Grade can also describe the quality or level of something. High-grade materials are excellent quality, while low-grade materials might be cheaper or less durable. A steep grade is a sharp incline in a road or hill: when you're riding your bike up a steep grade, you really feel the climb.
Finally, when teachers grade papers, they're reviewing student work and assigning those scores. So you complete assignments, teachers grade them, and you receive grades that help you understand what you've learned and where you can improve.