Final answer:
The SAT and ACT are aptitude tests used for college admissions to measure a student's readiness for college-level work.
Step-by-step explanation:
The SAT and ACT are standardized tests used for college admissions. They are primarily aptitude tests that measure a student's readiness for college-level work. These tests assess a student's critical thinking, problem-solving, and analytical skills, rather than specific subject knowledge or achievement.