Assessment is a word you hear a lot around schools –– it means figuring out what someone knows or has learned. A test can be an assessment tool, or a term paper, or a project.
More than just students are given assessments. You might bring your dad's plastic gnome collection to an expert for an assessment and find out it's worth all of $15.35. You might make a quick assessment of a situation –– say it's you, two bullies, your lunch money and a long hallway –– and decide to run.