Language assessment is a systematic process of gathering information about a person's language abilities through various methods. It plays an important role in education and employment by providing valuable information about a test-taker's performance, progress, and abilities. There are different types of language assessments, including formative assessments designed to identify strengths and weaknesses during learning, and summative assessments used to formally evaluate learning at the end of a course. Principles of language assessment aim to ensure the tests are practical, reliable, valid, and authentic in measuring the intended language abilities.