Every year the college board organizes the SAT exam for students from everywhere for admission to U.S. colleges. It assesses a student’s competency and readiness for college in reading, math, and writing. The college board conducts it seven times a year. SAT with an essay as an optional question takes about 3 hours and 45 minutes to complete. Without any optional essay, it lasts about 3 hours.
Colleges that add essay to their admission criteria wants the students to take up the essay as optional. SAT is for students that want admission to good colleges to pursue their undergraduate degrees. We know SAT as a scholastic assessment test. Students that want admission to colleges in Canada and US need to give SAT.