The Online SAT is a college entrance exam administered by the College Board. It is used by most colleges and universities in the United States to assess a student's readiness for college-level coursework. The Online SAT measures a student's knowledge and skills in the areas of reading, writing, and math. The test is designed to assess a student's academic proficiency and provide colleges and universities with an indication of how well a student is likely to perform in college-level coursework. Students who are planning to attend college or university in the United States must take the Online SAT in order to be considered for admission.