Meaning of SAT in English

SAT /sæt, ˌes eɪ ˈtiː/ BrE AmE noun [countable]

1 . trademark (Scholastic Aptitude Test) an examination that American high school students take before they go to college:

SAT scores have been steadily decreasing.

2 . SATs (Standard Assessment Tests) examinations that students in schools in England and Wales take at the ages of 7, 11, and 14, to see whether they have reached the standard set by the ↑ National Curriculum

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.