An instrument designed to efficiently measure the amount of academic knowledge and/or skill a student has acquired from instruction. Such tests provide information that can be compared to either a norm group or a measure of performance.
An achievement test measures the degree or extent of the knowledge information skills, and competencies that a person has acquired through training, instruction, or experience there are survey achievement tests as well as subject-related tests.
A test that measures the extent to which a person has acquired certain information or mastered certain skills, usually as a result of planned instruction or training. These tests are often called educational tests.
According to A Lexicon of Learning: What Educators Mean When They Say... from the Association for Supervision and Curriculum Development (ASCD), achievement tests are tests used to measure how much a student has learned in various school subjects. Most students take several standardized achievement tests, such as the California Achievement Tests and the Iowa Tests of Basic Skills. These norm-referenced, multiple-choice tests are intended to measure students' achievement in the basic subjects found in most school districts' curriculum and textbooks. Results are used to compare the scores of individual students and schools with others—those in the area, across the state, and throughout the United States.