SAT is required by most of the colleges and universities for admissions and scholarships into a Bachelor’s degree. It includes Math and Evidence-based Reading and Writing. There are some colleges and universities that do not require SAT tests, but good SAT scores (over 1300) and very good academic scores (3.8 GPA) can help students to get full tuition or full ride scholarships.
GMAT stands for Graduate Management Admission Test, and GRE stands for Graduate Record Examinations. These are tests required by most of the universities for admissions into a graduate degree, which sets a common ground to analyze the applicants. GMAT is usually required for admissions into programs such as MBA or other business-related courses, whilst GRE is required for admissions for other graduate programs.