A test is a way to measure knowledge, skills, or abilities. It can be used in schools to see how well students understand a subject, like math or science. Tests can come in many forms, such as multiple-choice questions, essays, or practical demonstrations. They help teachers know what students have learned and where they might need more help. In everyday life, tests can also refer to assessments of products or services. For example, a car might undergo safety tests to ensure it is safe for drivers. Similarly, software is often tested for bugs before being released to users. These tests help ensure quality and reliability.