The term 'USED A PEW' can be solved by the three-letter acronym SAT, which stands for Scholastic Aptitude Test. The SAT is a standardized test used by colleges and universities in the United States to assess a student's readiness for college-level work. It is typically taken by high school students as part of the college admissions process. The SAT consists of multiple-choice questions that measure a student's knowledge in areas such as reading, writing, and mathematics.