The SAT is an admission test accepted by all U.S. colleges, and the College Board has programs to encourage all students to take advantage of higher education. Your SAT score reveals whether your GPA and transcript are accurate representations of your academic ability.
Students looking to enroll in the undergraduate programs in the US appear for their SAT. Most of the colleges in the US require SAT for admission to the undergraduate courses. Apart from this, many schools also offer SAT scholarship money to students based on their SAT results.
SAT exam analyses Mathematical, Critical Reading and Writing skills of the candidates. According to the College Board, they test the skills which students have learned in their schools. They test the skills which are required for the academic success of the students in college.
Indefinite period.
https://collegereadiness.collegeboard.org/sat