SAT is a computer based test. It is taken for undergraduate admission in the United States and some other countries. It is usually taken by junior and senior high school students and is based on subjects taught in high school programs.

SAT is of two types

SAT Reasoning Test

SAT Subjects Test

It is offered seven times each year in the US and six times internationally.

To check the complete information you can refer below link

SAT Test

Good Luck!!