What is the expansion of abbreviation SAT?

Answer 1

The expansion used to be SAT: Scholastic Apptitude Test. Then it got changed to Scholastic Achievement Test. Once it was figured out that the SAT measures not apptitude nor achievement, the SAT doesn't stand for anything now. Interesting enough, look at SAT when it is written by the ETS and there aren't periods after each letter (like they used to be), which indicates that SAT is no longer an abbreviation.