Stanford Achievement Test Series

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The Stanford Achievement Test Series, usually referred to simply as the "SAT 9" or "SAT 10" (where the number reflects the series being used), is one of the leading standardized tests utilized by school districts in the United States for assessing children from kindergarten through high school; it is used to measure academic knowledge of elementary and secondary school students. The test is available in 13 levels that roughly correspond to the year in school. Each level of the test is broken into subtests or strands covering various subjects such as Reading Comprehension, Mathematical Problem Solving, and Science.

Students are graded by receiving a chart that measures their scores against the scores of two schools, one more stringent than the other, and by a number for each subject. This number indicates the grade level of a student who, if answering those same questions, would have gotten the same percentage of questions correct as the real student. Example, a 5th grade student scored a 6 in Science, that means a normal 6th grader would get about the same percentage of questions right as that 5th grade student.

Dating from its origin in 1926, the test is now in its tenth incarnation, or "Series". Although in many states it is being replaced by state-created tests (mandated by the No Child Left Behind Act of 2001), it is not equivalent to most of these tests, in that the Stanford series are more comprehensive in scope than the newer assessments. The SAT 10 is currently published by Harcourt Assessment, Inc.

It is not to be confused with the SAT, a test administered by the College Board for use in college admissions.