The SAT (Scholastic Assessment Test) is widely used for undergraduate college admissions in the U.S. The GRE is for graduate programs, the LSAT is for law school, and the MCAT is for medical school.
The ACT is a standardized test that evaluates high school students' readiness for college. It covers English, math, reading, and science reasoning.
The SAT does not include a dedicated science section. The ACT, on the other hand, has a science reasoning section.
The PSAT (Preliminary SAT) serves as a practice test for the SAT and is also used to determine eligibility for the National Merit Scholarship Program.
The TOEFL (Test of English as a Foreign Language) is designed to assess the English proficiency of non-native speakers applying to English-speaking universities.